Which is better - physical or chemical sunscreen?
Protection level
Physical sunscreens protect against both UVA and UVB rays, while chemical sunscreens are more of a mixed bag. This is why you’ll usually see a combination of active ingredients on a chemical sunscreen label: some work well against UVA rays, and some for UVB.
If a sunscreen is labeled broad-spectrum SPF, it’s going to protect you from both types of radiation, regardless of whether it’s chemical or physical.
Wait time
Both chemical and physical sunscreens take between 15–30 minutes to start working — but most people misunderstand why. Sunscreen products are formulated to leave a thin film that essentially sticks to the skin as it dries, evenly dispersing the active ingredients. If you rub it off or get it wet before it’s had time to set up, your sunscreen won’t be as effective.
Effective duration
The active ingredients in chemical sunscreen degrade as they absorb UV rays. While this isn’t as much of a factor with physical sunscreens, mineral formulas do tend to be more susceptible to rubbing or washing off. This is why both sunscreen types need to be reapplied regularly.
Look and feel
Traditionally, chemical sunscreens tend to disappear into the skin more thoroughly than their physical counterparts. Physical sunscreens typically leave a white cast on the skin, making it a downside to the product (spoiler, Revision created a CLEAR mineral sunscreen to combat this specific concern)!
Skin type
Everyone’s skin reacts differently to active sunscreen ingredients and other chemicals in the product’s formula. At the end of the day, it's about what formula you will wear every day. What I love about Revision's Intellishades is they offer multiple variations that are specific for different skin types.