Sunscreen Is Sunscreen – No Big Differences, Right?
Or is there more to it? Learn all about sunscreen, what it can and cannot do, and what to look for when purchasing.
SUNLIGHT: Around 50% consists of infrared radiation, 40% visible light, and 10% UV radiation (9.5% UV-A and 0.5% UV-B). But do you know which part sunscreen protects against?
Sunscreen primarily protects against UV-B rays. But what about the more abundant UV-A rays? UV-A has less energy but penetrates deeper into the skin, causing long-term damage.
5 Key Factors to Consider When Buying Sunscreen:
1. Understanding SPF
SPF (Sun Protection Factor) indicates how long your skin is protected. Multiply your natural protection time by the SPF for an approximate duration. For example, if you're skin type 3 with 20 min protection and use SPF 30:
20 min x 30 = 600 min or 10 hours. Experts recommend using only 60% of this time (6 hours).
2. SPF Abbreviations
Whether labeled SPF (Sun Protection Factor), LSF, SSF, or IP, they all mean the same. Focus on other factors when choosing sunscreen.
3. Water Resistance
Water-resistant sunscreens are a must for swimmers and water sports. "Water-resistant" means the sunscreen retains half its SPF after 2 x 20 minutes in water. "Extra water-resistant" means it lasts after 4 x 20 minutes.
Always reapply sunscreen after swimming!
4. UV Filters
Sunscreens can use chemical or mineral filters. Chemical filters may cause allergies and potentially disrupt hormones, while mineral filters are safer but may leave a white tint.
Avoid nano particles in sprays to prevent inhalation.
5. Sunscreen for Kids
Children need at least SPF 20 with UV-A and UV-B protection. Apply sunscreen 30 minutes before outdoor exposure and reapply regularly.