Image: roundlab.com
ROUND LAB
Birch Moisturizing Sun Cushion SPF 50
A sunscreen built around Mineral sunscreen and Hyaluronic acid, for barrier repair and hydration.
Brand price
USD 22.95 · checked 25 Sept 2026 · on the brand's site
From the brand
What the brand says about this product. Our ingredient analysis follows below.
The brand recommends it for
- Normal skin
- Sensitive skin
How to use
At the final step of your morning skincare routine, press the puff into the cushion and gently pat onto skin. Reapply throughout the day as needed for optimal protection.
Caution
For external use only. Do not use on damaged or broken skin. Stop use and ask a doctor if rash occurs. When using this product, keep out of eyes. Rinse with water to remove. Keep out of reach of children. If swallowed, get medical help or contact a Poison Control Center right away.
What's inside
Ingredients List
9 trigger at least one check · 27 trigger none
- Fatty alcohols (Malassezia)
- May Worsen Seborrheic Dermatitis
- Fatty esters (glyceryl stearate, PEG-100 stearate)
- May Worsen Seborrheic Dermatitis
Key Ingredients
Hyaluronic acid2
Hyaluronic acid and its salts; a humectant that binds water to the skin.
Benefits
Hydrating10
Boosts hydration and relieves dry, tight skin.
Aloe Barbadensis Leaf Extract, Aluminum Hydroxide, Dipotassium Glycyrrhizate, Glycerin, Glyceryl Glucoside, Hyaluronic Acid, Propanediol, Sodium Hyaluronate, Stearic Acid, Tocopherol
Barrier Repair12
Strengthens and restores the skin's natural barrier.
Allantoin, Aloe Barbadensis Leaf Extract, Aluminum Hydroxide, Butylene Glycol Dicaprylate/Dicaprate, Caprylyl Glycol, Dicaprylyl Carbonate, Glycerin, Glyceryl Caprylate, Laminaria Japonica Extract, Stearic Acid, Tocopherol, Zinc Oxide
Reduces Irritation3
Eases discomfort and supports skin resilience.
Smoothing7
Refines rough or uneven texture.
Allantoin, Aloe Barbadensis Leaf Extract, Aluminum Hydroxide, Butylene Glycol Dicaprylate/Dicaprate, Caprylyl Glycol, Dicaprylyl Carbonate, Glyceryl Caprylate
Antioxidant3
Shields skin from free radical damage.
Anti-Pollution8
Helps defend against airborne pollutants.
Allantoin, Aluminum Hydroxide, Ascorbic Acid, Glycerin, Laminaria Japonica Extract, Tocopherol, Viola Mandshurica Flower Extract, Zinc Oxide
Concerns
May Worsen Seborrheic Dermatitis6
May feed the yeast involved in seborrheic dermatitis.
Butyloctyl Salicylate, Disteardimonium Hectorite, Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate, Polyglyceryl-6 Polyricinoleate, Sorbitan Caprylate, Stearic Acid
May Worsen Keratosis Pilaris2
May clog follicles or strip skin prone to keratosis pilaris.
Ingredients Explained
Click on any ingredient to learn more about it
Water
Antiplaque, Skin Conditioning, Solvent
Aqua (EU),Deionized Water,Distilled Water,Micromatrix Fractile AN,Onsen-Sui (JPN),Purified Water
Learn more about Water →Zinc Oxide
Antimicrobial, Bulking, Colorant, Light Stabilizer, Oral Care, Skin Protecting, UV Absorber, UV Filter
Zinc Oxide is a mineral UV filter.
Learn more about Zinc Oxide →Caprylyl Methicone
Skin Conditioning
Caprylyl Methicone is a silicone.
Learn more about Caprylyl Methicone →Methyl Trimethicone
Hair Conditioning, Skin Conditioning, Solvent
Methyl Trimethicone is a silicone.
Learn more about Methyl Trimethicone →Butylene Glycol Dicaprylate/Dicaprate
Skin Conditioning, Emollient
1,2-Butanediol, diesters with octanoic and decanoic acids
Learn more about Butylene Glycol Dicaprylate/Dicaprate →Butyloctyl Salicylate
Hair Conditioning, Skin Conditioning, Solvent
Butyloctyl Salicylate isn't fungal acne safe.
Learn more about Butyloctyl Salicylate →Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate
Emulsion Stabilising, Cleansing, Emulsifying
Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate isn't fungal acne safe.
Learn more about Polyglyceryl-4 Diisostearate/Polyhydroxystearate/Sebacate →Propanediol
Solvent, Viscosity Controlling
Propanediol is the organic compound that conforms to the formula
Learn more about Propanediol →Glycerin
Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care, Perfuming, Humectant, Skin Protecting, Solvent, Viscosity Controlling
Glycerin may be plant, synthetic or animal depending on the supplier.
Learn more about Glycerin →Methyl Methacrylate/Glycol Dimethacrylate Crosspolymer
Film Forming
Methyl Methacrylate/Glycol Dimethacrylate Crosspolymer is a crosspolymer of Methyl Methacrylate and ethylene glycol dimethacrylate monomers
Learn more about Methyl Methacrylate/Glycol Dimethacrylate Crosspolymer →
Dupes
- ROUND LAB Birch Mild-Up Sunscreen UVLock SPF 50 Broad Spectrum74% match
- Axis-Y Complete No-Stress Physical Sunscreen V.366% match
- Isntree Hyaluronic Acid Natural Sun Cream65% match
- innisfree Daily UV Defense Mineral Sunscreen Broad Spectrum SPF 45 with Color Correcting65% match
- ROUND LAB Birch Moisturizing Sunscreen UVLock SPF 45 Broad Spectrum64% match
- ROUND LAB Birch Moisturizing Sun Stick SPF 5062% match