Cos De BAHA Vitamin C 15% Brightening Face Serum 1 fl oz — Lightweight, Hydrating, Fragrance-Free

Cos De BAHA Vitamin C 15% Serum is a lightweight, water-based ascorbic acid treatment formulated to brighten dull, uneven-looking skin while providing hydration.

This serum blends a clinically effective 15% pure ascorbic acid concentration with hydrating ingredients in a fragrance- and alcohol-free formula. Designed to layer smoothly under moisturizing steps and sunscreen, it suits morning routines that aim to even tone and refresh the complexion without heavy textures. The product’s Korean skin-care influence emphasizes simple, potent actives alongside soothing agents such as aloe and sodium hyaluronate.

How does this serum improve the look of dull or uneven-looking skin?

The high-purity 15% ascorbic acid works to deliver a visible-brightening effect over time when used consistently. By supporting skin surface radiance and helping reduce the look of discoloration from daily environmental factors, it can help the complexion appear more luminous and balanced.

• 15% pure ascorbic acid concentration for noticeable brightening potential
• Targets visible spots and uneven tone from external stressors
• Light, water-based texture layers under other Korean skin-care steps
• Best results seen with regular morning use followed by sunscreen

Will this serum hydrate and feel comfortable on my skin?

The formula combines humectants and soothing agents—glycerin, aloe, and sodium hyaluronate—to support skin hydration while using an active vitamin C. Because it’s water-based and free of fragrance and alcohol, the serum aims to minimize irritation and leave a non-greasy finish.

• Aloe and glycerin help soothe and attract moisture to the skin surface
• Sodium hyaluronate adds lightweight hydration without heaviness
• Fragrance-free and alcohol-free to reduce the chance of stinging
• Absorbs quickly, making it suitable for layering under moisturizer

How should I use Cos De BAHA Vitamin C 15% Serum in my routine?

Apply a small amount after cleansing and toner, then follow with moisturizer and a broad-spectrum sunscreen each morning. Because vitamin C can oxidize, use within the recommended timeframe and keep the cap tightly closed to maintain potency.

• Use a small pea-sized amount on clean, dry skin in the morning
• Layer before moisturizer and always finish with SPF during daytime
• Store in a cool, dark place; cap tightly to limit exposure to air
• Patch-test if you have sensitive skin or are new to ascorbic acid

Can this serum be combined with other active ingredients?

This water-based vitamin C blends well with many skin-care products but should be combined thoughtfully with other potent actives. To reduce sensitivity, avoid applying strong chemical exfoliants or retinoids at the same time of day; instead, alternate or layer with calming hydrators.

• Pairs smoothly with hydrating toners, niacinamide, and hyaluronic acid
• Avoid simultaneous use with high-concentration AHAs/BHAs or retinoids without guidance
• Use sunscreen after application to protect treated skin
• Introduce gradually if combining with other actives to monitor tolerance

Who is this for: Cos De BAHA Vitamin C 15% Serum suits people seeking a straightforward, potent brightening step in their morning skin-care routine. Ideal for individuals with dullness, uneven tone, or visible dark spots from daily environmental exposure who want a lightweight, non-greasy vitamin C option that hydrates while it brightens. Those with very sensitive skin should patch-test or begin with lower concentrations and consult a professional if unsure.