ROUND LAB Birch Juice Moisturizing Ampoule 1.69 fl oz — lightweight, fast-absorbing hydration with 10 hyaluronic acids

ROUND LAB Birch Juice Moisturizing Ampoule is a lightweight, fast-absorbing hydrating serum that delivers multi-layer moisture using 10 types of hyaluronic acid and Aquaxyl.

Designed for everyday layering and sensitive skin, this ampoule combines birch juice with a targeted hydrating complex to replenish skin quickly without heaviness. Its watery texture absorbs rapidly—clinically measured for fast uptake—and the formula has been through sensitivity testing and a Derma Test certification in Germany. The result is a portable 1.69 fl oz bottle that works as a primer under makeup, a layering serum in routines, or a quick moisture boost throughout the day.

How does this ampoule hydrate skin so quickly?

The formula uses a blend of 10 different molecular weights of hyaluronic acid plus Aquaxyl to support moisture distribution across multiple skin layers. That combination promotes quick surface absorption while helping water reach deeper layers for longer-lasting hydration.

• 10 types of hyaluronic acid for varied penetration depths
• Aquaxyl to enhance water retention and skin barrier efficiency
• Watery, non-greasy texture for fast absorption
• Clinically observed rapid absorption (7-second uptake reference)

Will this ampoule feel heavy under makeup or other products?

The ampoule has a thin, watery consistency that layers cleanly beneath moisturizers and makeup without pilling. Because it absorbs quickly and leaves no oily residue, it functions well as a hydrating primer or an extra layer in multi-step routines.

• Lightweight finish suitable for daytime use
• Non-greasy feel that won’t disrupt makeup application
• Designed to be layered with creams, sunscreens, and serums
• Makes subsequent products apply more smoothly

Is this safe for sensitive or reactive skin?

The ampoule has completed sensitivity testing and is certified by Germany’s Derma Test, indicating it was evaluated for compatibility with sensitive skin. Ingredients and formulation emphasize hydration and minimal irritation, though individual tolerances can vary.

• Underwent sensitivity testing and Derma Test certification
• Minimalist, hydration-forward ingredient focus
• Suitable for patch testing before full-face use
• Recommended for layering instead of abrasive actives

How long does the hydration last and how should I use it?

When included in a regular routine, the ampoule is clinically tested to support prolonged hydration effects—formulation notes indicate up to 72-hour moisture retention when used as directed. Apply after cleansing and toning, either alone or before a cream, and reapply as needed for targeted dry spots.

• Use morning and evening after toner or cleansing
• Apply 2–3 drops and press gently into skin for best absorption
• Layer under moisturizers or sunscreen for daily protection
• Can be used throughout the day for dry patches or makeup refresh

Who is this for: ROUND LAB Birch Juice Moisturizing Ampoule is aimed at anyone seeking a fast-absorbing, non-greasy hydrating serum—especially those with sensitive, dehydrated, or combination skin who want a reliable layering product. It suits users who prefer lightweight textures that work well under makeup and in multi-step skincare routines. If you are exploring a hyaluronic-rich option with clinically observed absorption and a Derma Test certification, this ampoule provides a concentrated, portable hydration boost in a 1.69 fl oz bottle.

Ingredients

Water, Methylpropanediol, Glycerin, 1,2-Hexanediol, Polyglyceryl-3, Caprylic/Capric Tryglycerides, Betula Platyphylla Japonica Juice (10,000ppm), Sodium Hyaluronate, Glyceryl Glucoside, Hydrolyzed Hyaluronic Acid, Butylene Glycol, Hyaluronic Acid, Ascorbic Acid, Beta-Glucan, Dipotassium Glycyrrhizate, Hydrogenated Lecithin, Ethylhexylglycerin, Eclipta Prostrata Leaf Extract, Laminaria Japonica Extract, Avena Sativa Kernel Extract, Cynara Scolymus (Artichoke) | Leaf Extract, Pteris Multifida Extract, Melia azadirachta(=Azadirachta indica) Extract, Melia Azadirachta Flower Extract, Coccinia Indica Fruit Extract, Aloe Barbadensis Flower Extract, Solanum Melongena (Eggplant) Fruit Extract, Ocimum Sanctum Leaf Extract, Corallina Officinalis Extract, Curcuma Longa Root Extract, Cyclohexasiloxane, Dipropylene Glycol, Ammonium Acryloyldimethyltaurate/VP Copolymer, Xanthan Gum, Fructooligosaccharides, Carbomer, Disodium EDTA, Polyquaternium-51, Tromethamine, Tocopherol.