UV damage inside a skin cell, and wet cement on the skin barrier Two cross-sections. Top: UV light reaches a skin cell and damages its DNA, and the damage adds up over years. Bottom: wet, strongly alkaline cement sits on the skin, works through the outer barrier and burns the living skin underneath. TWO VIEWS PHASE 1 · HEALTHY SUN: INSIDE ONE SKIN CELL WET CEMENT: ON THE BARRIER CROSS-SECTIONS, NOT TO SCALE DNA damage UV damages the DNA inside askin cell. Over years it adds up. UV light Sunburn is the part you can see.UVA reaches deepest. Wet cement Strongly alkaline. Worse when it’strapped in a glove or a boot. Outer barrier The stratum corneum. Redness, burns Cement works through and canburn the living skin underneath.

UV: R&R Lotion, Skin Cancer: Causes, Prevention and Treatment, white paper (2024), pp. 6, 7 and 9. Cement: CPWR / eLCOSH, Physician’s Alert: Skin Conditions. Illustration for education only.