Sunscreen is a lotion-based product that helps to block UVA and UVB rays from damaging the skin, which causes hyper-pigmentation and premature aging. Discover the makeup of sunblock withbeauty advice from a certified aesthetician in this free video on skin care. Expert: Kelli LaBar Bio: Kelli LaBar is a practicing aesthetician and makeup artist in Wilmington, NC Filmmaker: Reel Media LLC