101% Original
Lowest Price
Free Shipping

AHC Masters Air Rich Sun Stick

$1,000

18 products sold in last 16 hours
Selling fast! Over 17 people have in their cart

AHC Masters Air Rich Sun Stick SPF50+ PA++++ is a lightweight sunscreen stick that provides broad-spectrum UVA and UVB protection with a transparent, non-greasy finish. The portable stick format glides smoothly over the skin without leaving a white cast, making it easy to reapply throughout the day.

30 people are viewing this right now
  • Check Mark Estimated Delivery : Up to 4 business days
  • Check Mark Free Shipping & Returns : On all orders over $200
  • Visa Card
  • MasterCard
  • American Express
  • Discover Card
  • PayPal
  • Apple Pay
Guaranteed Safe And Secure Checkout

AHC Masters Air Rich Sun Stick SPF50+ PA++++ 22g

Product Overview

AHC Masters Air Rich Sun Stick SPF50+ PA++++ is a portable Korean sunscreen stick developed to provide effective daily UV protection in a lightweight, easy-to-apply format. Featuring broad-spectrum SPF50+ PA++++ protection, it helps shield the skin from harmful UVA and UVB rays while leaving a fresh, transparent finish without visible white residue.

The lightweight stick glides effortlessly over the skin, delivering even, transparent coverage without a sticky residue or white cast. Designed for convenient reapplication, it spreads smoothly even on damp skin, making it ideal for everyday use, travel, and outdoor activities.

In addition to broad-spectrum UV protection, the formula provides 4 UV Aging Care, helping soothe the skin while supporting improvements in skin brightness, the appearance of wrinkles, skin hydration, and overall skin texture following UV exposure.

The formula contains skin-conditioning ingredients including Niacinamide, Ceramide NP, Beta-Glucan, Panthenol, and a CICA complex composed of Madecassoside, Asiaticoside, Asiatic Acid, and Madecassic Acid. Together, these ingredients help support the skin barrier, maintain hydration, and keep the skin comfortable during daily sun exposure.

Its compact, travel-friendly design makes it easy to carry and reapply sunscreen whenever needed, providing convenient daily UV protection at home, at work, or while enjoying outdoor activities.

Key Benefits

Broad-Spectrum SPF50+ PA++++ Protection

Provides high-level UVA and UVB protection to help defend the skin against the harmful effects of daily sun exposure.

Lightweight, Invisible Finish

The lightweight formula glides smoothly over the skin, leaving a transparent finish without a white cast or sticky residue.

Even Application

Designed to spread evenly across the skin, including on damp skin, for quick and convenient sunscreen application throughout the day.

4 UV Aging Care

Helps soothe the skin while supporting improvements in skin brightness, wrinkle appearance, skin hydration, and overall skin texture following UV exposure.

Portable Stick Format

The compact stick design allows for easy, hands-free application and convenient reapplication wherever you go.

Comfortable Daily Wear

Leaves the skin feeling smooth, fresh, and comfortable without a heavy or greasy finish.

Key Ingredients

Niacinamide

Helps brighten the appearance of the skin while promoting a more even-looking complexion.

Ceramide NP

Supports the skin’s natural moisture barrier and helps reduce moisture loss.

Panthenol

Helps soothe the skin and improve moisture retention while supporting the skin barrier.

Beta-Glucan

A moisturizing ingredient that helps keep the skin hydrated and comfortable during daily sun exposure.

Madecassoside

A Centella asiatica-derived ingredient known for its soothing properties and its ability to support the skin barrier.

Asiaticoside

Helps comfort the skin and supports overall skin conditioning.

Asiatic Acid

A Centella asiatica component that helps maintain healthy-looking skin and supports barrier care.

Madecassic Acid

Helps soothe stressed skin while supporting skin recovery and comfort.

Tocopherol (Vitamin E)

An antioxidant that helps protect the skin against environmental stressors while supporting the skin barrier.

Full Ingredients (INCI)

Methyl Trimethicone, Isoamyl Laurate, Polymethylsilsesquioxane, Coco-Caprylate/Caprate, Ethylhexyl Methoxycinnamate, Diisopropyl Sebacate, Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer, Dibutyl Lauroyl Glutamide, Ethylhexyl Salicylate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Dibutyl Ethylhexanoyl Glutamide, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Niacinamide, Synthetic Wax, Ozokerite, Polyglyceryl-2 Triisostearate, Tocopherol, Ceramide NP, Beta-Glucan, Panthenol, Bisabolol, Madecassoside, Asiaticoside, Asiatic Acid, Madecassic Acid, Ethylhexylglycerin, Caprylyl Glycol, Water, 1,2-Hexanediol, Fragrance.

Comparison

AHC Masters Air Rich Sun Stick SPF50+ PA++++ is designed for convenient daily sun protection in a portable stick format. Unlike traditional sunscreen creams, the lightweight formula applies directly to the skin without using your hands, making reapplication quick and effortless throughout the day.

The transparent texture glides smoothly over the skin without leaving a white cast or sticky residue. Its compact design and even application, including on damp skin, make it an excellent choice for commuting, travel, outdoor activities, and everyday touch-ups.

How It Works

AHC Masters Air Rich Sun Stick combines broad-spectrum UV filters to help protect the skin from harmful UVA and UVB rays. The lightweight formula forms an even protective layer while Niacinamide, Ceramide NP, Panthenol, Beta-Glucan, and Centella asiatica-derived ingredients help support the skin barrier, maintain hydration, and keep the skin feeling comfortable during daily sun exposure.

Preparation

Apply as the final step of your morning skincare routine to clean, dry skin before sun exposure.

Injection Technique

This product is intended for topical use only and is not designed for injection or aesthetic procedures.

Aftercare

Reapply every two hours during prolonged sun exposure and after swimming, excessive sweating, or towel drying to help maintain effective UV protection.

Treatment Areas

Suitable for the face, neck, ears, hairline, décolleté, and other areas exposed to sunlight. The stick format allows for quick, precise application without using your hands.

Treatment Protocol

Twist the dial at the bottom of the stick to raise the product by approximately 5 mm. Glide evenly from the center of the face outward, ensuring all exposed areas are covered. Reapply regularly throughout the day as needed.

Expected Results

Provides immediate broad-spectrum SPF50+ PA++++ protection while leaving the skin with a lightweight, transparent finish. With regular use, the formula helps keep the skin comfortable and hydrated while supporting 4 UV Aging Care, including soothing, brightening, wrinkle care, and improvement of overall skin texture after UV exposure.

Safety

For external use only. Avoid contact with the eyes. Do not apply to damaged or irritated skin. If redness, swelling, itching, or other signs of irritation occur, discontinue use and consult a healthcare professional. Keep out of reach of children and store away from direct sunlight and excessive heat.

Package

  • Product: AHC Masters Air Rich Sun Stick SPF50+ PA++++
  • Net Weight: 22g
  • Country of Origin: South Korea

Storage & Handling

Store in a cool, dry place away from direct sunlight and high temperatures. Keep the cap tightly closed after each use. Extend the stick by approximately 5 mm during application to help prevent damage and ensure smooth use.

FAQ

Is this sunscreen suitable for daily use?

Yes. The lightweight stick format is designed for convenient everyday use and easy reapplication whenever additional sun protection is needed.

Does it leave a white cast?

No. The transparent formula is designed to leave little to no visible white cast while providing even coverage.

Can I apply it to damp skin?

Yes. According to AHC, the formula is designed to spread evenly even on damp skin, making it convenient for outdoor activities and quick touch-ups.

What is 4 UV Aging Care?

According to AHC, the formula helps support skin soothing, brightening, wrinkle care, hydration, and improvement in overall skin texture after UV exposure.

How should I apply the stick?

Turn the dial at the bottom to raise the product by about 5 mm, then glide it evenly over skin exposed to sunlight. Reapply every two hours or as needed during prolonged sun exposure.

Weight 22 kg

Reviews

There are no reviews yet.

Be the first to review “AHC Masters Air Rich Sun Stick”

Your email address will not be published. Required fields are marked *

Allowed formats: JPG, JPEG, PNG, WEBP. Max size: 4MB.

Shipping policy

At our Company, we understand the importance of timely delivery. We offer a variety of shipping options to suit your needs, including standard, expedited, and express shipping. Our dedicated team works diligently to process and dispatch your orders promptly, aiming to deliver them to your doorstep within the estimated timeframe.

We strive to provide fast and reliable shipping to our customers. Here’s everything you need to know about our shipping process:

  • Dispatch: Within 24 Hours
  • Free shipping across all products on a minimum purchase of $99.
  • International delivery time 5 to 7 business days
  • Cash on delivery might be available
  • Easy 30 days returns and exchanges

Please note that delivery times are estimates and may vary depending on factors such as product availability, destination, and carrier delay

Returns policy

We want you to be completely satisfied with your purchase from our website. If for any reason you are not entirely happy with your order, we’re here to help. Certain exclusions and conditions may apply, so we encourage you to review our detailed return policy for more information. Rest assured, our goal is to ensure your complete satisfaction with every purchase you make from our website

  1. Returned items must be unused, undamaged, and in the same condition as received.
  2. Original tags, labels, and packaging must be intact and included with the returned item.
  3. Proof of purchase, such as your order confirmation or receipt, is required for all returns.

Shipping policy

At our Company, we understand the importance of timely delivery. We offer a variety of shipping options to suit your needs, including standard, expedited, and express shipping. Our dedicated team works diligently to process and dispatch your orders promptly, aiming to deliver them to your doorstep within the estimated timeframe.

We strive to provide fast and reliable shipping to our customers. Here’s everything you need to know about our shipping process:

  • Dispatch: Within 24 Hours
  • Free shipping across all products on a minimum purchase of $99.
  • International delivery time 5 to 7 business days
  • Cash on delivery might be available
  • Easy 30 days returns and exchanges

Please note that delivery times are estimates and may vary depending on factors such as product availability, destination, and carrier delay

Returns policy

We want you to be completely satisfied with your purchase from our website. If for any reason you are not entirely happy with your order, we’re here to help. Certain exclusions and conditions may apply, so we encourage you to review our detailed return policy for more information. Rest assured, our goal is to ensure your complete satisfaction with every purchase you make from our website

  1. Returned items must be unused, undamaged, and in the same condition as received.
  2. Original tags, labels, and packaging must be intact and included with the returned item.
  3. Proof of purchase, such as your order confirmation or receipt, is required for all returns.

Description

AHC Masters Air Rich Sun Stick SPF50+ PA++++ 22g

Product Overview

AHC Masters Air Rich Sun Stick SPF50+ PA++++ is a portable Korean sunscreen stick developed to provide effective daily UV protection in a lightweight, easy-to-apply format. Featuring broad-spectrum SPF50+ PA++++ protection, it helps shield the skin from harmful UVA and UVB rays while leaving a fresh, transparent finish without visible white residue.

The lightweight stick glides effortlessly over the skin, delivering even, transparent coverage without a sticky residue or white cast. Designed for convenient reapplication, it spreads smoothly even on damp skin, making it ideal for everyday use, travel, and outdoor activities.

In addition to broad-spectrum UV protection, the formula provides 4 UV Aging Care, helping soothe the skin while supporting improvements in skin brightness, the appearance of wrinkles, skin hydration, and overall skin texture following UV exposure.

The formula contains skin-conditioning ingredients including Niacinamide, Ceramide NP, Beta-Glucan, Panthenol, and a CICA complex composed of Madecassoside, Asiaticoside, Asiatic Acid, and Madecassic Acid. Together, these ingredients help support the skin barrier, maintain hydration, and keep the skin comfortable during daily sun exposure.

Its compact, travel-friendly design makes it easy to carry and reapply sunscreen whenever needed, providing convenient daily UV protection at home, at work, or while enjoying outdoor activities.

Key Benefits

Broad-Spectrum SPF50+ PA++++ Protection

Provides high-level UVA and UVB protection to help defend the skin against the harmful effects of daily sun exposure.

Lightweight, Invisible Finish

The lightweight formula glides smoothly over the skin, leaving a transparent finish without a white cast or sticky residue.

Even Application

Designed to spread evenly across the skin, including on damp skin, for quick and convenient sunscreen application throughout the day.

4 UV Aging Care

Helps soothe the skin while supporting improvements in skin brightness, wrinkle appearance, skin hydration, and overall skin texture following UV exposure.

Portable Stick Format

The compact stick design allows for easy, hands-free application and convenient reapplication wherever you go.

Comfortable Daily Wear

Leaves the skin feeling smooth, fresh, and comfortable without a heavy or greasy finish.

Key Ingredients

Niacinamide

Helps brighten the appearance of the skin while promoting a more even-looking complexion.

Ceramide NP

Supports the skin's natural moisture barrier and helps reduce moisture loss.

Panthenol

Helps soothe the skin and improve moisture retention while supporting the skin barrier.

Beta-Glucan

A moisturizing ingredient that helps keep the skin hydrated and comfortable during daily sun exposure.

Madecassoside

A Centella asiatica-derived ingredient known for its soothing properties and its ability to support the skin barrier.

Asiaticoside

Helps comfort the skin and supports overall skin conditioning.

Asiatic Acid

A Centella asiatica component that helps maintain healthy-looking skin and supports barrier care.

Madecassic Acid

Helps soothe stressed skin while supporting skin recovery and comfort.

Tocopherol (Vitamin E)

An antioxidant that helps protect the skin against environmental stressors while supporting the skin barrier.

Full Ingredients (INCI)

Methyl Trimethicone, Isoamyl Laurate, Polymethylsilsesquioxane, Coco-Caprylate/Caprate, Ethylhexyl Methoxycinnamate, Diisopropyl Sebacate, Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer, Dibutyl Lauroyl Glutamide, Ethylhexyl Salicylate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Dibutyl Ethylhexanoyl Glutamide, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Niacinamide, Synthetic Wax, Ozokerite, Polyglyceryl-2 Triisostearate, Tocopherol, Ceramide NP, Beta-Glucan, Panthenol, Bisabolol, Madecassoside, Asiaticoside, Asiatic Acid, Madecassic Acid, Ethylhexylglycerin, Caprylyl Glycol, Water, 1,2-Hexanediol, Fragrance.

Comparison

AHC Masters Air Rich Sun Stick SPF50+ PA++++ is designed for convenient daily sun protection in a portable stick format. Unlike traditional sunscreen creams, the lightweight formula applies directly to the skin without using your hands, making reapplication quick and effortless throughout the day.

The transparent texture glides smoothly over the skin without leaving a white cast or sticky residue. Its compact design and even application, including on damp skin, make it an excellent choice for commuting, travel, outdoor activities, and everyday touch-ups.

How It Works

AHC Masters Air Rich Sun Stick combines broad-spectrum UV filters to help protect the skin from harmful UVA and UVB rays. The lightweight formula forms an even protective layer while Niacinamide, Ceramide NP, Panthenol, Beta-Glucan, and Centella asiatica-derived ingredients help support the skin barrier, maintain hydration, and keep the skin feeling comfortable during daily sun exposure.

Preparation

Apply as the final step of your morning skincare routine to clean, dry skin before sun exposure.

Injection Technique

This product is intended for topical use only and is not designed for injection or aesthetic procedures.

Aftercare

Reapply every two hours during prolonged sun exposure and after swimming, excessive sweating, or towel drying to help maintain effective UV protection.

Treatment Areas

Suitable for the face, neck, ears, hairline, décolleté, and other areas exposed to sunlight. The stick format allows for quick, precise application without using your hands.

Treatment Protocol

Twist the dial at the bottom of the stick to raise the product by approximately 5 mm. Glide evenly from the center of the face outward, ensuring all exposed areas are covered. Reapply regularly throughout the day as needed.

Expected Results

Provides immediate broad-spectrum SPF50+ PA++++ protection while leaving the skin with a lightweight, transparent finish. With regular use, the formula helps keep the skin comfortable and hydrated while supporting 4 UV Aging Care, including soothing, brightening, wrinkle care, and improvement of overall skin texture after UV exposure.

Safety

For external use only. Avoid contact with the eyes. Do not apply to damaged or irritated skin. If redness, swelling, itching, or other signs of irritation occur, discontinue use and consult a healthcare professional. Keep out of reach of children and store away from direct sunlight and excessive heat.

Package

  • Product: AHC Masters Air Rich Sun Stick SPF50+ PA++++
  • Net Weight: 22g
  • Country of Origin: South Korea

Storage & Handling

Store in a cool, dry place away from direct sunlight and high temperatures. Keep the cap tightly closed after each use. Extend the stick by approximately 5 mm during application to help prevent damage and ensure smooth use.

FAQ

Is this sunscreen suitable for daily use?

Yes. The lightweight stick format is designed for convenient everyday use and easy reapplication whenever additional sun protection is needed.

Does it leave a white cast?

No. The transparent formula is designed to leave little to no visible white cast while providing even coverage.

Can I apply it to damp skin?

Yes. According to AHC, the formula is designed to spread evenly even on damp skin, making it convenient for outdoor activities and quick touch-ups.

What is 4 UV Aging Care?

According to AHC, the formula helps support skin soothing, brightening, wrinkle care, hydration, and improvement in overall skin texture after UV exposure.

How should I apply the stick?

Turn the dial at the bottom to raise the product by about 5 mm, then glide it evenly over skin exposed to sunlight. Reapply every two hours or as needed during prolonged sun exposure.

Suggested Use

Apply evenly to the face and neck as the final step of your morning skincare routine. Reapply throughout the day as needed, especially after sweating or prolonged sun exposure.

Details

AHC Masters Air Rich Sun Stick SPF50+ PA++++ 22g

Product Overview

AHC Masters Air Rich Sun Stick SPF50+ PA++++ is a portable Korean sunscreen stick developed to provide effective daily UV protection in a lightweight, easy-to-apply format. Featuring broad-spectrum SPF50+ PA++++ protection, it helps shield the skin from harmful UVA and UVB rays while leaving a fresh, transparent finish without visible white residue.

The lightweight stick glides effortlessly over the skin, delivering even, transparent coverage without a sticky residue or white cast. Designed for convenient reapplication, it spreads smoothly even on damp skin, making it ideal for everyday use, travel, and outdoor activities.

In addition to broad-spectrum UV protection, the formula provides 4 UV Aging Care, helping soothe the skin while supporting improvements in skin brightness, the appearance of wrinkles, skin hydration, and overall skin texture following UV exposure.

The formula contains skin-conditioning ingredients including Niacinamide, Ceramide NP, Beta-Glucan, Panthenol, and a CICA complex composed of Madecassoside, Asiaticoside, Asiatic Acid, and Madecassic Acid. Together, these ingredients help support the skin barrier, maintain hydration, and keep the skin comfortable during daily sun exposure.

Its compact, travel-friendly design makes it easy to carry and reapply sunscreen whenever needed, providing convenient daily UV protection at home, at work, or while enjoying outdoor activities.

Key Benefits

Broad-Spectrum SPF50+ PA++++ Protection

Provides high-level UVA and UVB protection to help defend the skin against the harmful effects of daily sun exposure.

Lightweight, Invisible Finish

The lightweight formula glides smoothly over the skin, leaving a transparent finish without a white cast or sticky residue.

Even Application

Designed to spread evenly across the skin, including on damp skin, for quick and convenient sunscreen application throughout the day.

4 UV Aging Care

Helps soothe the skin while supporting improvements in skin brightness, wrinkle appearance, skin hydration, and overall skin texture following UV exposure.

Portable Stick Format

The compact stick design allows for easy, hands-free application and convenient reapplication wherever you go.

Comfortable Daily Wear

Leaves the skin feeling smooth, fresh, and comfortable without a heavy or greasy finish.

Key Ingredients

Niacinamide

Helps brighten the appearance of the skin while promoting a more even-looking complexion.

Ceramide NP

Supports the skin's natural moisture barrier and helps reduce moisture loss.

Panthenol

Helps soothe the skin and improve moisture retention while supporting the skin barrier.

Beta-Glucan

A moisturizing ingredient that helps keep the skin hydrated and comfortable during daily sun exposure.

Madecassoside

A Centella asiatica-derived ingredient known for its soothing properties and its ability to support the skin barrier.

Asiaticoside

Helps comfort the skin and supports overall skin conditioning.

Asiatic Acid

A Centella asiatica component that helps maintain healthy-looking skin and supports barrier care.

Madecassic Acid

Helps soothe stressed skin while supporting skin recovery and comfort.

Tocopherol (Vitamin E)

An antioxidant that helps protect the skin against environmental stressors while supporting the skin barrier.

Full Ingredients (INCI)

Methyl Trimethicone, Isoamyl Laurate, Polymethylsilsesquioxane, Coco-Caprylate/Caprate, Ethylhexyl Methoxycinnamate, Diisopropyl Sebacate, Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer, Dibutyl Lauroyl Glutamide, Ethylhexyl Salicylate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Dibutyl Ethylhexanoyl Glutamide, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Niacinamide, Synthetic Wax, Ozokerite, Polyglyceryl-2 Triisostearate, Tocopherol, Ceramide NP, Beta-Glucan, Panthenol, Bisabolol, Madecassoside, Asiaticoside, Asiatic Acid, Madecassic Acid, Ethylhexylglycerin, Caprylyl Glycol, Water, 1,2-Hexanediol, Fragrance.

Comparison

AHC Masters Air Rich Sun Stick SPF50+ PA++++ is designed for convenient daily sun protection in a portable stick format. Unlike traditional sunscreen creams, the lightweight formula applies directly to the skin without using your hands, making reapplication quick and effortless throughout the day.

The transparent texture glides smoothly over the skin without leaving a white cast or sticky residue. Its compact design and even application, including on damp skin, make it an excellent choice for commuting, travel, outdoor activities, and everyday touch-ups.

How It Works

AHC Masters Air Rich Sun Stick combines broad-spectrum UV filters to help protect the skin from harmful UVA and UVB rays. The lightweight formula forms an even protective layer while Niacinamide, Ceramide NP, Panthenol, Beta-Glucan, and Centella asiatica-derived ingredients help support the skin barrier, maintain hydration, and keep the skin feeling comfortable during daily sun exposure.

Preparation

Apply as the final step of your morning skincare routine to clean, dry skin before sun exposure.

Injection Technique

This product is intended for topical use only and is not designed for injection or aesthetic procedures.

Aftercare

Reapply every two hours during prolonged sun exposure and after swimming, excessive sweating, or towel drying to help maintain effective UV protection.

Treatment Areas

Suitable for the face, neck, ears, hairline, décolleté, and other areas exposed to sunlight. The stick format allows for quick, precise application without using your hands.

Treatment Protocol

Twist the dial at the bottom of the stick to raise the product by approximately 5 mm. Glide evenly from the center of the face outward, ensuring all exposed areas are covered. Reapply regularly throughout the day as needed.

Expected Results

Provides immediate broad-spectrum SPF50+ PA++++ protection while leaving the skin with a lightweight, transparent finish. With regular use, the formula helps keep the skin comfortable and hydrated while supporting 4 UV Aging Care, including soothing, brightening, wrinkle care, and improvement of overall skin texture after UV exposure.

Safety

For external use only. Avoid contact with the eyes. Do not apply to damaged or irritated skin. If redness, swelling, itching, or other signs of irritation occur, discontinue use and consult a healthcare professional. Keep out of reach of children and store away from direct sunlight and excessive heat.

Package

  • Product: AHC Masters Air Rich Sun Stick SPF50+ PA++++
  • Net Weight: 22g
  • Country of Origin: South Korea

Storage & Handling

Store in a cool, dry place away from direct sunlight and high temperatures. Keep the cap tightly closed after each use. Extend the stick by approximately 5 mm during application to help prevent damage and ensure smooth use.

FAQ

Is this sunscreen suitable for daily use?

Yes. The lightweight stick format is designed for convenient everyday use and easy reapplication whenever additional sun protection is needed.

Does it leave a white cast?

No. The transparent formula is designed to leave little to no visible white cast while providing even coverage.

Can I apply it to damp skin?

Yes. According to AHC, the formula is designed to spread evenly even on damp skin, making it convenient for outdoor activities and quick touch-ups.

What is 4 UV Aging Care?

According to AHC, the formula helps support skin soothing, brightening, wrinkle care, hydration, and improvement in overall skin texture after UV exposure.

How should I apply the stick?

Turn the dial at the bottom to raise the product by about 5 mm, then glide it evenly over skin exposed to sunlight. Reapply every two hours or as needed during prolonged sun exposure.