DS Laboratories Pure Vitamin C 35% Booster (30ml)

Pure Vitamin C 35% Booster is a serious brightening serum built around an exceptionally high concentration of Vitamin C - 25% Ethyl-O-Ascorbic Acid combined with 10% Tetrahexyldecyl Ascorbate in a waterless formula engineered to keep every molecule potent and stable. Where single-form Vitamin C serums rely on one delivery pathway, this dual-form approach combines a water-soluble and oil-soluble Vitamin C derivative to penetrate both the surface and deeper layers of the skin. The result is more intense brightening, firmer-looking skin, and meaningful protection against photoaging and environmental damage.

Who's It For

Pure Vitamin C 35% Booster is for anyone targeting uneven skin tone, dullness, fine lines, or visible photoaging who wants a high-potency, dermatologist-formulated Vitamin C treatment. Given the concentration, it's best suited to skin that has some tolerance to active ingredients - those new to Vitamin C serums should build up gradually. Suitable for normal, oily, and combination skin.

Key Benefits

• 35% total Vitamin C concentration via two complementary forms for broader skin penetration and enhanced efficacy
• Waterless formula ensures maximum stability and potency - no degradation from water contact Intense brightening and radiance enhancement with consistent daily use
• Protects against photoaging damage and environmental pollutants via antioxidant action
• Promotes firmer, more even-looking skin over time
• Olive-derived Squalane and Vitamin E enhance barrier support and boost the brightening effect 

Key Ingredients

• Ethyl-O-Ascorbic Acid (25%) - A highly stable, water-soluble Vitamin C derivative that delivers potent brightening and antioxidant protection at the skin's surface, inhibiting melanin production and defending against environmental damage.
• Tetrahexyldecyl Ascorbate (10%) - An oil-soluble Vitamin C derivative that penetrates deeper into the skin than traditional L-Ascorbic Acid, working at a cellular level to stimulate collagen synthesis and address photoaging from within.
• Squalane - An olive-derived emollient that supports the skin's lipid barrier, enhances the absorption of surrounding actives, and prevents moisture loss in the waterless formula base.
• Tocopherol (Vitamin E) - Works synergistically with both Vitamin C forms to amplify antioxidant protection, stabilize the formula, and support overall skin radiance and resilience.

How To Use

Apply a few drops to clean, dry skin after cleansing and toning. Gently press into the face and neck - do not rub. Follow with moisturizer and SPF in the morning. Use once daily, building to twice daily as skin tolerance allows. If new to high-concentration Vitamin C, introduce gradually - start every other day and increase frequency over 2-3 weeks. 

Why MASC Recommends This

Vitamin C serums are everywhere. A genuinely high-concentration, dual-form, waterless formula is not. The combination of Ethyl-O-Ascorbic Acid and Tetrahexyldecyl Ascorbate gives this serum a meaningful penetration advantage over single-form alternatives, and the waterless base keeps that concentration working as intended. For anyone serious about brightening, this is the one to reach for.