Round Lab Birch Juice Moisturizing UVLOCK SPF 45

$24.00

What it is: A hydrating chemical sunscreen formulated with SPF 45 PA++++ and Birch Tree Sap to deliver broad-spectrum protection against UVA, UVB, and blue light while keeping skin dewy, calm, and deeply moisturized.

Who it's for: All skin types; especially dry, dehydrated, and sensitive skin.

Key ingredients:

  • Birch Tree Sap (Betula Platyphylla Japonica Juice): Rich in minerals and antioxidants, nourishes and hydrates while calming inflammation for a healthy, balanced complexion

  • Avobenzone, Homosalate & Octisalate: A chemical UV filter trio providing reliable broad-spectrum UVA and UVB protection

  • Niacinamide: Brightens uneven tone, calms redness, and supports the skin barrier

How to use: As the final step of your skincare routine, apply a generous amount evenly across the face to create a protective barrier. Reapply as needed throughout the day.

Full ingredient list: 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, Avobenzone, Homosalate, Octisalate.

Chemist's Notes
Reviewed by April Basi, cosmetic chemist
This is a chemical sunscreen, which means the filters mostly absorb UV radiation rather than reflecting it — that's what gives it the lightweight, essence-like texture. Avobenzone is one of the strongest UVA filters available in the US market, and pairing it with homosalate and octisalate gives broad-spectrum coverage without the white cast. Same note as the SPF 50 sibling in this line — Anthemis Nobilis Flower Oil and Pinus Sylvestris Leaf Oil are naturally fragrant components despite the fragrance-free positioning, so patch test first if you're strictly fragrance-sensitive.

What it is: A hydrating chemical sunscreen formulated with SPF 45 PA++++ and Birch Tree Sap to deliver broad-spectrum protection against UVA, UVB, and blue light while keeping skin dewy, calm, and deeply moisturized.

Who it's for: All skin types; especially dry, dehydrated, and sensitive skin.

Key ingredients:

  • Birch Tree Sap (Betula Platyphylla Japonica Juice): Rich in minerals and antioxidants, nourishes and hydrates while calming inflammation for a healthy, balanced complexion

  • Avobenzone, Homosalate & Octisalate: A chemical UV filter trio providing reliable broad-spectrum UVA and UVB protection

  • Niacinamide: Brightens uneven tone, calms redness, and supports the skin barrier

How to use: As the final step of your skincare routine, apply a generous amount evenly across the face to create a protective barrier. Reapply as needed throughout the day.

Full ingredient list: 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, Avobenzone, Homosalate, Octisalate.

Chemist's Notes
Reviewed by April Basi, cosmetic chemist
This is a chemical sunscreen, which means the filters mostly absorb UV radiation rather than reflecting it — that's what gives it the lightweight, essence-like texture. Avobenzone is one of the strongest UVA filters available in the US market, and pairing it with homosalate and octisalate gives broad-spectrum coverage without the white cast. Same note as the SPF 50 sibling in this line — Anthemis Nobilis Flower Oil and Pinus Sylvestris Leaf Oil are naturally fragrant components despite the fragrance-free positioning, so patch test first if you're strictly fragrance-sensitive.