Determine which formula you prefer
Although every formula is different, most reputable hair sunscreens are considered an effective, safe way to shield your scalp and hair from UV rays. Hair sunscreens come in spray and powder formulas that absorb into your hair and scalp super easily. Typically, in the case of a scalp sunscreen, you’ll have more options when it comes to formula. However, if you’re in the market for a hair UV protectant, most formulas will be a leave-in cream, spray, or milk.
If you don’t think a sunscreen or UV protectant spray is something you’ll incorporate into your daily routine, Dr. Lal recommends a hat. “Hats are the best if you are going to be outside for long periods of time.” Remember: Whichever form of sun protection you choose to use is the best form of sun protection.
Choose between chemical and mineral sunscreen
Hair sunscreens contain specific molecules that either reflect UV light or absorb it, preventing it from reaching your hair and skin and damaging it,” says Burg. There are two types of sunscreen, mineral vs chemical—let’s break it down: Mineral sunscreen is like a shield and sits on top of your skin, and deflects UV rays, whereas chemical sunscreen absorbs UV rays, converts them into heat, and releases them from your skin.
Mineral sunscreen works for all skin types and is especially great for sensitive skin, yet it may come with a white cast. Chemical sunscreen tends to be sheerer and clearer but can pose a risk of irritation for those with reactive or sensitive skin. Ultimately, the choice is up to you, but all in all, the best sunscreen is the one you’ll wear and one that is at least SPF 30—which is the minimum to keep your skin protected from the sun.
Know your skin and hair type
“Generally, SPF hair protectors contain similar ingredients to what you’d use on your skin,” says Burg. Remember: Your scalp is the extension of the skin on your face, so when choosing a scalp sunscreen, if you’re particularly oily, your best bet would be to stick with a powder. If you’re on the dryer side, choose a spray. If you have sensitive or acne-prone skin, use a mineral sunscreen.
When it comes to UV protectant sprays for your hair, if you tend to have oilier hair, choose a lightweight formula that’s designed to not weigh your hair down. If you have coarse or dry and damaged hair, a super moisturizing leave-in cream should be your go-to.