Dangers of Sun Exposure & How to Protect Your Skin
What is Sunlight?
Sunlight consists of different types of radiation and light, categorized by wavelength:
1. Visible Light (45%)
๐ Low energy
๐ Can cause skin darkening and worsen pigmentation over time
2. Invisible Light (Ultraviolet - UV)
UV radiation is divided into:
๐ UVA - causes skin aging, wrinkles, and pigmentation
๐ UVB - causes sunburn and increases the risk of skin cancer
๐ UVC - mostly blocked by the atmosphere
3. Infrared Light (50%)
๐ Produces heat
๐ Infrared A contributes to premature aging (photoaging)
๐ Damages collagen and causes wrinkles through free radical formation
How Dangerous are UVA & UVB?
๐ UVA - Premature aging, dark spots, wrinkles
๐ UVB - Sunburn and increased risk of skin cancer
How to Protect Yourself from Sunlight
Avoid sun exposure between 10:00 AM - 4:00 PM:
๐ Long-sleeved clothing
๐ Wide-brim hats
๐ Sunglasses (helps prevent cataracts)
Why Sunscreen is Important
Sunscreen protects the skin from harmful UV radiation, including:
๐ UVA
๐ UVB
๐ UVC
Without protection, UV exposure can:
๐ Accelerate skin aging
๐ Increase the risk of skin cancer
Understanding SPF & PA
๐ SPF (Sun Protection Factor) - Protection against UVB
๐ PA (Protection Grade of UVA) - Protection against UVA
What Happens If You Don’t Use Sunscreen?
๐ Increased risk of skin cancer
๐ Sunburn
๐ Wrinkles and premature aging
๐ Uneven skin tone and dark spots
๐ Loss of skin elasticity
Types of Sunscreen
1. Chemical Sunscreen
๐ Absorbs UV rays
๐ Lightweight but may cause irritation
๐ Needs reapplication
2. Physical Sunscreen
๐ Reflects UV rays
๐ Protects against UVA, UVB, visible light, and infrared
๐ Less irritating, suitable for sensitive skin
How to Choose Sunscreen for Your Skin Type
๐ Oily / Combination Skin: Gel, lotion, or oil-free formulas
๐ Normal Skin: Any type is suitable
๐ Dry Skin: Cream-based with moisturizing ingredients
๐ Sensitive Skin: Alcohol-free
Summary
Sunlight has benefits, but overexposure can damage the skin and increase cancer risk.
The best protection is:
๐ Avoid peak sunlight
๐ Wear protective clothing
๐ Use sunscreen every day
source : Bangpakok 9 International Hospital
**Translated and compiled by ArokaGO Content Team
Independent Writer
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