3. People with sensitive skin
should not use high index sunscreen
A saying that sunscreen more than SPF 30 is not appropriate for sensitive skin is a lie. The more sensitive your skin is, the more UV protection is required. If you have a light sensitive skin, it is better rather to use a sunscreen more than SPF 40. It is necessary to make a thick barrier on the skin using a sunscreen of more than SPF40 made of physical UV protection ingredient.
Have your misunderstandings disappeared？ All of this information was extracted from the book"50 lies about cosmetics" written by Na-gyeong Lee. If you want more information go to the library and check it out one. If you want to answer your questions, I recommend you to go to the cosmetics information site "www.ifacemaker.com" and "www.face-spa.co.kr" which the writer of “50 lies about cosmetics” runs.