What are the key ingredients in sunscreen?
Skin cancer runs in my family, and I am obsessed with prevention of this hereditary conditon. Do moisturizers containing sunscreen really help? What should I be using?
Thank you for your question and for taking a proactive apporach! A study published in the Archives of Dermatology reported the lack of protection against UVA-1 in daily moisturizers that contain sunscreen. The authors report that protection against UVA-1 was considered adequate if at least one of the following criteria was met: 1) a combination of avobenzone (>2%) and octocrylene (>3.6%) with or without ecamsule (2%); 2) the presence of zinc oxide (>5%).