You may start to see brighter, more even-toned skin within 1–2 weeks of using a ferulic acid and vitamin C serum daily. For deeper repair of sun-damaged skin, most users notice visible improvement in 4–6 weeks with consistent use. Ferulic acid works best when combined with antioxidants like vitamin C and E, helping fade dark spots, reduce inflammation, and restore a healthy, radiant glow over time.

Yes, you can use ferulic acid in your evening routine, but it’s most effective when used in the morning with a vitamin C serum. Ferulic acid boosts the antioxidant power of vitamin C and E, helping protect your skin from free radical damage throughout the day. However, using it at night can still support skin repair and brightening, especially for sun-damaged or uneven skin tone. Just be sure to follow with a gentle moisturizer.

Ferulic acid is generally well-tolerated and not known to clog pores, making it safe for most skin types, including acne-prone skin. However, if it's combined with heavy oils, fragrances, or other irritating ingredients, some people may experience breakouts. That’s why it’s important to choose a clean, well-formulated ferulic acid serum like MAXDAHLIA’s Cell Active Ferulic C + E Day Serum— made with acne-safe, non-comedogenic ingredients designed to support clear, healthy skin without irritation.

Yes, ferulic acid is a powerful antioxidant you can (and should) use year-round. It helps protect your skin from free radical damage caused by sun exposure, pollution, and daily stress — not just in summer. When combined with vitamin C and E, ferulic acid boosts your skin’s defense system, supports collagen production, and helps fade dark spots and uneven tone over time. For optimal results, use a ferulic acid serum daily, no matter the season.