ROUND LAB Birch Juice Moisturizing UVLOCK Sun Stick SPF 50
by Round Lab · skin_care
Editor's Take
The protection is convincing and the finish polished, but the birch story cannot make this synthetic filter-and-polymer stick clean or environmentally light.
Four-pillar formula scores
- Efficacy: 8.4 / 10
- Modern Tech: 7.2 / 10
- Clean Beauty: 1.0 / 10
- Sustainability: 0.0 / 10
The Verdict
Four organic UV filters provide credible broad-spectrum coverage, while silicone elastomers keep the stick smooth, blurred, and non-greasy. Birch juice and Glyceryl Glucoside add meaningful moisture support for a format that can otherwise feel dry. Clean and sustainability credentials are the clear weak spots, given the persistent silicones, synthetic polymers, and filter-heavy base. A strong portable sunscreen, not 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