Undecided Question

What sunscreen will work well with sensitized skin (because of microcycline)?

im thinking of buying CHANEL UV Essentiel Protective UV Care Anti Pollution SPF50 since my skin is so sensitive from the microcycline but will this be too harsh for my skin?

i know it says not to go out in the sun if you are taking the medication but for uni i have to walk from building to building and in that short amount of time my skin reacts to the sun :S i just need a reliable sunscreen.