Hi All. Why is everyone here using 70-100 SPF sunscreen for everyday use?? That strength of sunscreen is recommended for days at the beach or outdoor sports where there is harsh and prolonged exposure to direct sunlight. Of course there will be a chalky effect as super strength sunscreens contain more chemicals. In the long run these will irritate the skin....Asian skin requires an SPF 35 for everyday sun protection. Ask any good dermatologist.