ROUND LAB Birch Juice Moisturizing UVLOCK Sun Stick SPF 50
by Round Lab · skin_care
Editor's Take
Pocket SPF with serious UV muscle and a lovely blur, but the clean aisle will side-eye the Homosalate, Octocrylene, silicones, and plastic polymers.
Four-pillar formula scores
- Efficacy: 8.4 / 10
- Modern Tech: 7.2 / 10
- Clean Beauty: 1.0 / 10
- Sustainability: 0.0 / 10
The Verdict
On protection, it earns the strong efficacy alignment: Homosalate, Octocrylene, Octisalate, and Avobenzone give this stick broad-spectrum SPF 50 in a format made for reapplication. Birch Juice and Glyceryl Glucoside add credible moisture, while Dimethicone and Methyl Methacrylate Crosspolymer give that smooth, blurred, non-greasy glide. The catch is not performance, it is standards: Homosalate, Octocrylene, Avobenzone, silicones, and Polyethylene make it a poor fit for strict clean or sustainability-minded shopping. Worth it as a handbag sunscreen stick for convenience and finish, not as a clean-beauty pick.
Full INCI list
Homosalate, Octocrylene, Octisalate, Avobenzone, Diethylhexyl Carbonate, Dimethicone, Methyl Methacrylate Crosspolymer, Synthetic Wax, Diphenylsiloxy Phenyl Trimethicone, Butyloctyl Salicylate, Butyl Methoxydibenzoylmethane, Isopropyl Palmitate, Phenethyl Benzoate, Diisostearyl Malate, Ethylhexyl Isononanoate, Caprylyl Trimethicone, Synthetic Fluorphlogopite, Bis-Behenyl/Isostearyl/Phytosteryl Dimer Dilinoleyl Dimer Dilinoleate, Polymethylsilsesquioxane, Polyethylene, Dimethicone/Vinyl Dimethicone Crosspolymer, Camellia Japonica Seed Oil, Ethylene/Propylene Copolymer, Silica Dimethyl Silylate, Dimethicone Crosspolymer, Candelilla Wax Esters, Artemisia Annua Extract, Copernicia Cerifera (Carnauba) Wax, Pinus Sylvestris Leaf Oil, Anthemis Nobilis Flower Oil, Water, Dipotassium Glycyrrhizate, Allantoin, Glyceryl Glucoside, Butylene Glycol, Glycerin, 1, 2-Hexanediol, Betula Platyphylla Japonica Juice, Ulmus Davidiana Root Extract, Aloe Barbadensis Leaf Extract, Dioscorea Japonica Root Extract, Viola Mandshurica Flower Extract, Laminaria Japonica Extract, Glyceryl Caprylate, Sodium Hyaluronate, Hyaluronic Acid, Ascorbic Acid