Essential Skincare Science: The Importance of Sunscreen and How to Use It Correctly

Essential Skincare Science: The Importance of Sunscreen and How to Use It Correctly

   Every morning, the most important final step in your skincare routine is applying sunscreen. UV rays do more than just tan your skin; they are the main cause of skin aging and various skin troubles. However, many people find sunscreen inconvenient or are unaware of its full effects and proper usage. In this article, we’ll scientifically explain the importance of sunscreen for skin health and the right way to use it for maximum effectiveness.

 

 

Why Are UV Rays So Dangerous?

 

   UV rays are divided into two types based on their wavelength: UVA and UVB. Both have different harmful effects on your skin.

 

  • UVA (Long-Wave UV): With a long wavelength, it penetrates deep into the dermal layer of the skin. It destroys collagen and elastin, accelerating aging and causing wrinkles and skin sagging. It's essential to use protection against UVA rays year-round, as they can penetrate through clouds and windows.

  • UVB (Medium-Wave UV): With a shorter wavelength, it primarily affects the skin's outer layer. It damages skin cells, causing sunburn and directly contributing to hyperpigmentation such as melasma, dark spots, and freckles.

 

 

How to Choose Sunscreen Smartly

 

   What do the SPF and PA ratings on sunscreen mean?

 

  • SPF (Sun Protection Factor): This is the UVB protection rating. The higher the number, the greater the protection. An SPF of 30 or higher is sufficient for daily life, while an SPF 50+ is recommended for outdoor activities.

  • PA (Protection Grade of UVA): This is the UVA protection rating. The more '+' signs, the greater the protection. It's best to use a product with a PA+++ or higher to block everyday UV exposure.

 

 

How to Use Sunscreen Correctly: The Secret to Maximizing Effectiveness

 

   When it comes to sunscreen, 'how you apply it' determines its effectiveness. Be sure to remember these tips!

 

  1. Apply 30 Minutes Before Going Out: It takes about 30 minutes for the active ingredients in sunscreen to be absorbed by your skin and become effective. Get into the habit of applying it in advance so it doesn't lose its effectiveness.

  2. Apply a Generous, Coin-Sized Amount: Applying only a small amount won't give you adequate sun protection. You should apply a generous, coin-sized amount (about 0.8g) to your face and apply it carefully to exposed areas like your neck and arms.

  3. Reapply Every 2-3 Hours: Sunscreen can be worn away by sweat or sebum. You must reapply it every 2-3 hours to maintain its protective effect. A cushion-type or spray sunscreen is convenient for reapplying over makeup.

  4. Cleanse Thoroughly: Sunscreen adheres well to your skin, so you must use a double cleanse to wash it off completely before bed.

 

 

A Sunscreen Selection Guide for Sensitive Skin

 

   If you have sensitive skin, you should check the ingredients even more carefully.

 

  • Mineral vs. Chemical Sunscreen:

    • Mineral (Physical) Sunscreen: Uses ingredients like zinc oxide and titanium dioxide to reflect UV rays, making it less irritating to the skin. It can leave a white cast but is recommended for sensitive skin.

    • Chemical Sunscreen: Uses organic chemical ingredients to absorb UV rays and convert them into heat energy. It has a smooth texture, but some ingredients can cause skin irritation.

 

 

Serenity Beauty’s Sun Protection Solutions

 

   Serenity Beauty offers sunscreens that will perfectly protect your skin.

 

  • Mild Tone-Up Sunscreen: Mineral ingredients gently block UV rays and provide a natural tone-up effect.

  • Airy Hydrating Sun Stick: Has a non-sticky, refreshing feel and is convenient for reapplying over makeup throughout the day.

 

 

Conclusion: Sunscreen is the Beginning and End of Skincare

 

   Sunscreen is not just a cosmetic product; it’s an essential skin protector. Starting today, make applying sunscreen a habit to effectively prevent skin aging and troubles. This small habit is the most reliable secret to maintaining healthy and beautiful skin for a long time. Serenity Beauty supports your radiant skin.

 

Related Searches sunscreen, SPF, PA, skin aging, how to use sunscreen, mineral sunscreen, chemical sunscreen

Back to blog