buttah. 15% Vitamin C Serum for Face, 1 fl oz — Brightening with Ferulic Acid & Vitamin E

buttah. 15% Vitamin C Serum is a lightweight facial serum formulated with stable vitamin C, ferulic acid, and vitamin E to help brighten uneven skin tone and support a calm, hydrated complexion.

This 1 fl oz (30 mL) treatment blends a 15% concentration of vitamin C with ferulic acid and vitamin E, plus a soothing green tea-scented base designed for daily use. The formulation targets visible signs of discoloration and aims to support an even-looking tone while offering antioxidant support from combined actives. Its non-oily texture layers easily under moisturizers and sunscreen, making it suitable for AM and PM routines depending on sensitivity.

How does this serum help reduce the appearance of dark spots and uneven tone?

The serum uses a concentrated 15% vitamin C to help visibly even the complexion while ferulic acid stabilizes and boosts antioxidant performance. Vitamin E complements this trio by supporting skin barrier comfort and texture. Regular, consistent application to targeted areas can help improve the look of patchy pigmentation over time.

• 15% vitamin C concentration designed for brightening benefits
• Ferulic acid improves antioxidant stability and efficacy
• Vitamin E nourishes and supports skin barrier resilience
• Formulated for layering under moisturizers and SPF

What does the texture and scent feel like during use?

The serum is lightweight and absorbs quickly without leaving a heavy or greasy residue. A subtle green tea scent provides a calming sensory note that dissipates after absorption. It is intended to sit comfortably beneath creams and makeup.

• Fast-absorbing, non-greasy texture
• Light green tea fragrance that fades after application
• Suitable for layering with other skincare products
• 1 fl oz (30 mL) dropper bottle for controlled dosing

How should I introduce this serum into my skincare routine safely?

Start with a patch test and apply the serum a few times a week, then increase frequency as tolerated. In morning routines, follow with a broad-spectrum sunscreen; in evening routines, pair with a gentle moisturizer. Avoid combining with high-strength exfoliating acids on the same application until you know your skin’s tolerance.

• Patch test before full-face use
• Begin with every-other-day application, increase as tolerated
• Use daily sunscreen when used in the morning
• Do not layer with strong active acids immediately without guidance

What skin types and concerns is this serum best suited for?

The formula is developed for skin showing uneven tone, hyperpigmentation, or dullness, and for anyone seeking antioxidant support in their routine. Its calming components and vitamin E make it appropriate for dry to combination skin; those with very sensitive skin should introduce it gradually. It’s formulated to complement other targeted treatments rather than replace them.

• Targets uneven skin tone and dark spot-prone areas
• Good for dry, normal, and combination skin types
• Can be integrated into AM or PM routines with sunscreen in AM
• Not a substitute for professional treatments or medical advice

Who is this for: This serum is for people seeking a scientifically minded antioxidant treatment to help even complexion tone and support a calmer, hydrated surface appearance. It suits those who want a practical daily serum to layer under moisturizers and sunscreen, especially users interested in vitamin C boosted by complementary ingredients like ferulic acid and vitamin E. If you have highly reactive skin or are using prescription topical agents, consult a dermatologist before introducing new actives.