Biossance Squalane + Zinc Sheer Mineral Sunscreen SPF 30 PA +++ Versus Bioderma Photoderm Nude Touch SPF 50+

Biossance Squalane + Zinc Sheer Mineral Sunscreen SPF 30 PA +++ Versus Bioderma Photoderm Nude Touch SPF 50+ Detailed comparison of Biossance Squalane + Zinc Sheer Mineral Sunscreen SPF 30 PA +++ versus Bioderma Photoderm Nude Touch SPF 50+. This hybrid sunscreen covers the full UV range and blocks ~97% of UVB at SPF 30. This mineral sunscreen covers the full UV range and blocks ~98% of UVB at SPF 50. Zinc Oxide Water Caprylic/Capric Triglyceride Squalane Glycerin Cetearyl Alcohol Methyl Dihydroabietate Sorbitan Olivate Coco-Glucoside Cetyl Palmitate Polyglyceryl-3 Polyricinoleate Caprylyl/Capryl Glucoside Nymphaea Alba Flower Extract Acacia Senegal Gum Ethyl Ferulate Xanthan Gum Sodium Gluconate Lecithin Sodium Palmitoyl Proline Polyhydroxystearic Acid Ethylhexylglycerin Phenoxyethanol Isostearic Acid Zinc Oxide, Water, Caprylic/Capric Triglyceride, Squalane, Glycerin, Cetearyl Alcohol, Methyl Dihydroabietate, Sorbitan Olivate, Coco-Glucoside, Cetyl Palmitate, Polyglyceryl-3 Polyricinoleate, Caprylyl/Capryl Glucoside, Nymphaea Alba Flower Extract, Acacia Senegal Gum, Ethyl Ferulate, Xanthan Gum, Sodium Gluconate, Lecithin, Sodium Palmitoyl Proline, Polyhydroxystearic Acid, Ethylhexylglycerin, Phenoxyethanol, Isostearic Acid Dimethicone Isododecane Isostearyl Isostearate Butyrospermum Parkii Butter Extract Titanium Dioxide Propylheptyl Caprylate Dipropylene Glycol Methyl Methacrylate Crosspolymer Silica Polymethylsilsesquioxane Hdi/Trimethylol Hexyllactone Crosspolymer PEG-10 Dimethicone CI 77492 Polysilicone-11 Triethoxycaprylylsilane Salicylic Acid Butylene Glycol Capryloyl Glycine Propyl Gallate CI 77491 Hydrogenated Lecithin Caprylyl Glycol Decyl Glucoside Tocopherol Ectoin Mannitol Xylitol Zinc Oxide, Dimethicone, Isododecane, Isostearyl Isostearate, Butyrospermum Parkii Butter Extract, Titanium Dioxide, Propylheptyl Caprylate, Dipropylene Glycol, Methyl Methacrylate Crosspolymer, Silica, Polymethylsilsesquioxane, Polyhydroxystearic Acid, Water, Hdi/Trimethylol Hexyllactone Crosspolymer, PEG-10 Dimethicone, CI 77492, Polysilicone-11, Triethoxycaprylylsilane, Salicylic Acid, Butylene Glycol, Capryloyl Glycine, Propyl Gallate, CI 77491, Hydrogenated Lecithin, Caprylyl Glycol, Decyl Glucoside, Tocopherol, Ectoin, Mannitol, Xylitol Be the first to review These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Polyhydroxystearic Acid is a vegetable-derived soft wax made from castor oil. It's an emulsion stabilizer, thickener, and film former. You'll likely see it in sunscreens because it helps disperse pigments and UV-reflecting minerals like titanium dioxide and zinc oxide evenly. Depending on the concentration, it can drastically change the texture of a product from pasty solid (like lipstick) to sprayable liquid. The CIR Expert Panel for Cosmetic Ingredient Safety has concluded this ingredient to be safe in cosmetics. The highest reported use concentration is 14.2% in lipsticks. Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product. So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation. You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated! Zinc Oxide (ZO) is a mineral broad-spectrum UV filter and the broadest-spectrum filter recognized by the FDA. It covers everything from UVB through to long-wave UVA. On top of sun protection, it has skin protectant and skin-soothing properties too. Here's a myth worth busting: mineral filters are usually described as working by "reflecting" or "bouncing" UV off your skin. That's mostly not true: when researchers actually measured it, ZO and Titanium Dioxide reflect only about 4-5% of UV (less than SPF 2 worth of protection). The vast majority of the work (~95%) is done by absorption, similar to chemical UV filters. ZO is a semiconductor that absorbs UV photos through its energy band gap. So the old "physical blocker vs. chemical absorber" framing is really an oversimplification. Zinc Oxide is one of the most effective broad-spectrum UV filters out there. It protects across UVB, UVA2, and UVA1 with a flat, even absorption curve across the whole UVA-UVB range. That uniform UVA coverage is its standout feature; titanium dioxide skews more toward UVB as its particle size drops so ZO gives more consistent and extended UVA protection. It's also very photostable. As an inorganic oxide, ZO doesn't break down in sunlight the way some organic filters can, so it holds up over a day of wear. This ingredient is gentle and soothing, making it go-to for sunscreens aimed at sensitive skin, rosacea, or ecezma-prone skin, babies, and children. It's also unlikely to cause the "eye sting" that some sunscreen ingredients are known for, and regulatory agencies broadly consider it non-toxic and safe for topical use. Beyond sun protection, ZO is also a recognized OTC skin protectant. It forms a breathable barrier that shields skin from moisture and irritation while supporting healing. This is why you'll see it as a classic active in di