Both Elta blocks contain micronized zinc (Z-Cote ®) for broad spectrum UV-A protection. The chemical sunscreens (methoxycinnamate and octyl salicylate) boost the SPF level to help provide good UV-B protection. Elta Blocks are PABA-free and safe for sensitive skin. Elta Block 32 is a combination block and light moisturizer for daily use on face, hands and arms. Elta Blocks are PABA-free and safe for sensitive skin. Excellent under makeup. Use in conjunction with Retin-A therapy, with photosensitive medications, and after plastic surgery to protect and moisturize. Strong UV-A coverage to help stop photo-aging from sun rays.