Biosolis® Sun Milk Kids SPF 50+ BIOSOLIS® Kids Sunscreen SPF 50+ is the ideal choice for protecting your children from harmful UVA/UVB rays. Made with 100% mineral filters, it offers very high natural protection. The formula is fragrance-free and leaves no sticky residue on the skin. It is also water-resistant, making it especially practical for children who love to play in the water. Application Apply generously to the skin before sun exposure and reapply regularly during sun exposure. Reapply especially after swimming, sweating, or toweling off.