BYOMA Ultralight Face Fluid SPF 50 Versus Paula's Choice 5% Vitamin C Sheer Moisturizer SPF 50

BYOMA Ultralight Face Fluid SPF 50 Versus Paula's Choice 5% Vitamin C Sheer Moisturizer SPF 50 Detailed comparison of BYOMA Ultralight Face Fluid SPF 50 versus Paula's Choice 5% Vitamin C Sheer Moisturizer SPF 50. This chemical sunscreen covers most of the UV range, lighter on the deep UVA that drives aging. This hybrid sunscreen covers the full UV range and blocks ~98% of UVB at SPF 50. Butyl Methoxydibenzoylmethane 3% Homosalate 7% Ethylhexyl Salicylate 5% Octocrylene 9% Water Butyloctyl Salicylate Glycerin Dicaprylyl Carbonate Diisopropyl Adipate Sodium Stearoyl Glutamate Cocoglycerides Propanediol Microcrystalline Cellulose Tocopherol Bisabolol Caprylyl Glycol Ethyl Ferulate Sodium Hyaluronate Glyceryl Stearate Se Methylheptylglycerin Sodium Gluconate Caprylhydroxamic Acid Xanthan Gum Phospholipids Cellulose Gum Citric Acid Glycolipids Olea Europaea Fruit Oil Aloe Barbadensis Leaf Juice Phosphatidylserine Astaxanthin Ceramide NP Cholesterol Hydrogenated Lecithin Oleic Acid Phytosphingosine Haematococcus Pluvialis Extract Caprylic/Capric Triglyceride Stearic Acid Sodium Benzoate Potassium Sorbate 1,2-Hexanediol Beta-Glucan Lactic Acid Butyl Methoxydibenzoylmethane 3%, Homosalate 7%, Ethylhexyl Salicylate 5%, Octocrylene 9%, Water, Butyloctyl Salicylate, Glycerin, Dicaprylyl Carbonate, Diisopropyl Adipate, Sodium Stearoyl Glutamate, Cocoglycerides, Propanediol, Microcrystalline Cellulose, Tocopherol, Bisabolol, Caprylyl Glycol, Ethyl Ferulate, Sodium Hyaluronate, Glyceryl Stearate Se, Methylheptylglycerin, Sodium Gluconate, Caprylhydroxamic Acid, Xanthan Gum, Phospholipids, Cellulose Gum, Citric Acid, Glycolipids, Olea Europaea Fruit Oil, Aloe Barbadensis Leaf Juice, Phosphatidylserine, Astaxanthin, Ceramide NP, Cholesterol, Hydrogenated Lecithin, Oleic Acid, Phytosphingosine, Haematococcus Pluvialis Extract, Caprylic/Capric Triglyceride, Stearic Acid, Sodium Benzoate, Potassium Sorbate, 1,2-Hexanediol, Beta-Glucan, Lactic Acid Butyl Methoxydibenzoylmethane Ethylhexyl Methoxycinnamate Ethylhexyl Salicylate Octocrylene Silica 3-O-Ethyl Ascorbic Acid Ascorbyl Glucoside Dimethicone Tetrahexyldecyl Ascorbate Acetyl Zingerone Acrylates/C10-30 Alkyl Acrylate Crosspolymer Diethylhexyl Syringylidenemalonate Dimethicone/Vinyl Dimethicone Crosspolymer Porphyra Umbilicalis Extract Ricinus Communis Seed Oil Sodium Hydroxide Ethylhexylglycerin Laureth-4 Phenoxyethanol Titanium Dioxide Iron Oxides Entada Phaseoloides Bark/Seed Extract Butyl Methoxydibenzoylmethane, Ethylhexyl Methoxycinnamate, Ethylhexyl Salicylate, Octocrylene, Water, Glycerin, Silica, 3-O-Ethyl Ascorbic Acid, Ascorbyl Glucoside, Dimethicone, Propanediol, Tetrahexyldecyl Ascorbate, Acetyl Zingerone, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Diethylhexyl Syringylidenemalonate, Dimethicone/Vinyl Dimethicone Crosspolymer, Porphyra Umbilicalis Extract, Hydrogenated Lecithin, Ricinus Communis Seed Oil, Sodium Hydroxide, Tocopherol, Xanthan Gum, Ethylhexylglycerin, Laureth-4, Phenoxyethanol, Potassium Sorbate, Sodium Benzoate, Titanium Dioxide, Iron Oxides, Entada Phaseoloides Bark/Seed Extract These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Also known as Avobenzone, this ingredient is an oil-soluble used to absorb the full spectrum of UVA rays (peak 357 nm). It's one of the most effective UVA filters available but has a major caveat of photostability: avobenzone is susceptible to photodegradation. This means it can lose efficacy when exposed to sunlight without the help of a stabilizing agent. Studies show antioxidants (like vitamin E or vitamin C) and some UV filters (like octocrylene and Tinosorb S) can meaningfully improve its stability in a formulation. The maximum allowable concentration according to regulation is 3% in the US + Canada, and 5% in the EU, Australia, China, Korea, and ASEAN countries. It has a well-support safety profile: a comprehensive 2025 review found minimal toxicity with no evidence of carcinogenicity. Overall, avobenzone is a safe and regulated ingredient used in sunscreen for over 40 years. Ethylhexyl Salicylate (also called Octisalate or Octyl Salicylate) is an oil-soluble organic UV filter that's been used in sunscreen since the 1950's. It absorbs UVB light in the 280-320 nm range with a peak absorbance around 306 nm. You'll often see it paired with other UV filters to boost overall SPF because octisalate is a fairly week filter on its own. The reason you'll see it so often is because it can help solubilize and stabilize the trickier filters like oxybenzone and avobenzone. Unlike these filters, octisalate has pretty good photostability and doesn't create skin-damaging free radicals when exposed to sunlight. The fatty-alcohol part of the molecule also gives it a light, emollient feel so it doubles as a nice texture enhancer. Usage levels vary around the world: Safety-wise, this ingredient has a pretty reassuring track record. The EU's Scientific Committee on Consumer Products (SCCP) found very low skin penetration in human skin tests and negative results for irritation, phototoxicity, and photoallergy. The real-world allergy risk is pretty low too; a 2012 European study of 1,031 people recorded only 2 reactions to it (a rate of 0.19%). You might have seen scary headlines about sunscreen getting into your blood. In 2019, the FDA found that several chemical filters can absorb through the skin and show up in the bloodstream at small but measurable levels. Here's the important part: these tiny levels are just a cutoff the FDA uses to decide which ingredients need more testing and doesn't mean anything harmful was found. The researchers were clear that the results are no reason to stop wearing sunscreen. Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum. Topically, glycerin does several things at once: Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, vi