Round Lab Birch Juice Moisturizing UVLock Sunscreen SPF 45 Versus Beauty of Joseon Day Dew Sunscreen SPF 50

Round Lab Birch Juice Moisturizing UVLock Sunscreen SPF 45 Versus Beauty of Joseon Day Dew Sunscreen SPF 50 Detailed comparison of Round Lab Birch Juice Moisturizing UVLock Sunscreen SPF 45 versus Beauty of Joseon Day Dew Sunscreen SPF 50. This chemical sunscreen covers most of the UV range, lighter on the deep UVA that drives aging. Butyl Methoxydibenzoylmethane 2.7% Homosalate 13.5% Ethylhexyl Salicylate 4.5% Water Butyloctyl Salicylate Propanediol Acrylates Copolymer Butylene Glycol Caprylyl Methicone Polyglyceryl-3 Distearate Benzotriazolyl Dodecyl P-Cresol Niacinamide Diethylhexyl 2,6-Naphthalate Polymethylsilsesquioxane Glycerin Calcium Aluminum Borosilicate 1,2-Hexanediol Poly C10-30 Alkyl Acrylate Pentylene Glycol Cetearyl Alcohol Tromethamine Methylpropanediol Glyceryl Stearate Citrate Betula Platyphylla Japonica Juice Acrylates/C10-30 Alkyl Acrylate Crosspolymer Carbomer Ethylhexylglycerin Artemisia Annua Extract Anthemis Nobilis Flower Oil Sodium Stearoyl Glutamate Glyceryl Polymethacrylate Triethoxycaprylylsilane Pinus Sylvestris Leaf Oil Sparassis Crispa Extract Polyether-1 Allantoin Dipropylene Glycol Glyceryl Glucoside Biosaccharide Gum-1 Tocopherol Portulaca Oleracea Extract Sodium Hyaluronate Hyaluronic Acid Ascorbic Acid Butyl Methoxydibenzoylmethane 2.7%, Homosalate 13.5%, Ethylhexyl Salicylate 4.5%, Water, Butyloctyl Salicylate, Propanediol, Acrylates Copolymer, Butylene Glycol, Caprylyl Methicone, Polyglyceryl-3 Distearate, Benzotriazolyl Dodecyl P-Cresol, Niacinamide, Diethylhexyl 2,6-Naphthalate, Polymethylsilsesquioxane, Glycerin, Calcium Aluminum Borosilicate, 1,2-Hexanediol, Poly C10-30 Alkyl Acrylate, Pentylene Glycol, Cetearyl Alcohol, Tromethamine, Methylpropanediol, Glyceryl Stearate Citrate, Betula Platyphylla Japonica Juice, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Carbomer, Ethylhexylglycerin, Artemisia Annua Extract, Anthemis Nobilis Flower Oil, Sodium Stearoyl Glutamate, Glyceryl Polymethacrylate, Triethoxycaprylylsilane, Pinus Sylvestris Leaf Oil, Sparassis Crispa Extract, Polyether-1, Allantoin, Dipropylene Glycol, Glyceryl Glucoside, Biosaccharide Gum-1, Tocopherol, Portulaca Oleracea Extract, Sodium Hyaluronate, Hyaluronic Acid, Ascorbic Acid Butyl Methoxydibenzoylmethane Homosalate Ethylhexyl Salicylate Octocrylene Dimethicone Vp/Eicosene Copolymer Ammonium Polyacryloyldimethyl Taurate Hydroxyacetophenone Phenoxyethanol Tocopheryl Acetate Panthenol Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Xanthan Gum Oryza Sativa Extract Butyl Methoxydibenzoylmethane, Homosalate, Ethylhexyl Salicylate, Octocrylene, Water, Butyloctyl Salicylate, Glycerin, Dimethicone, Poly C10-30 Alkyl Acrylate, Vp/Eicosene Copolymer, Cetearyl Alcohol, Niacinamide, Sodium Stearoyl Glutamate, Ammonium Polyacryloyldimethyl Taurate, Hydroxyacetophenone, Phenoxyethanol, Tocopheryl Acetate, Panthenol, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Xanthan Gum, Propanediol, Oryza Sativa Extract, 1,2-Hexanediol, Sodium Hyaluronate These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse. It is a: Humectant, drawing moisture into the skin Emollient, helping to soften skin Solvent, dispersing and stabilizing formulas Preservative booster, enhancing the antimicrobial activity of other preservatives 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. Butyloctyl Salicylate is a chemical UV filter structurally similar to octisalate. It is a photostabilizer, SPF booster, emollient and solvent. This ingredient helps evenly spread out ingredients. According to a manufacturer, it is suitable for pairing with micro Titanium Dioxide, Zinc Oxide, and pigments. Photostabilizers help stabilize UV-filters and prevents them from degrading quickly. Cetearyl alcohol is a waxy mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is an emollient and emulsifier. Despite having "alcohol" in its name, it has nothing to do with drying solvent alcohols; the FDA also allows "alcohol-free" products to contain fatty alcohols like this ingredient. It plays several roles in a formula: Typical use levels for this ingredient sit around 1-10% and the Cosmetic Ingredient Review Expert Panel has affirmed safety at concentrations up to 25% in leave-on products. Multiple assessments have found it to be non-irritating and non-sensitizing to most people. However, there have been some cases of allergic contact dermatitis in patients with chronically compromised skin barriers. Cetearyl alcohol has a comedogenic rating of 2 and irritancy rating of 1. Both of these numbers come from the 1989 study that used rabbit ears; a "2" means mildly comedogenic and a "1" means low irritancy. Here's the catch: rabbit skin is more sensitive than human skin and throws a lot of false positives. A 1996 reappraisal found that ingredients rated 1-2 in the rabbit ear tests are generally safe for humans. Remember comedogenic ratings are unable to assess the entire formula of a product or how it will react on your skin. Just be sure to patch tes