Kiehl's Clearly Corrective Dark Spot Serum — 1.0 fl oz, Activated C + Salicylic Acid for Even Tone & Radiance

Kiehl's Clearly Corrective Dark Spot Serum is a lightweight corrective serum designed to reduce the appearance of dark spots, even skin tone, and boost radiance while improving skin texture.

This targeted serum combines Activated C and buffered Salicylic Acid in a fast-absorbing base to address visible discoloration, refine surface texture, and deliver a brighter-looking complexion. Backed by clinical testing across multiple skin tones, the formula is intended to be used as a daily full-face serum or as a concentrated spot treatment where hyperpigmentation appears.

How does this serum work to reduce dark spots?

The formula pairs a stabilized Vitamin C derivative (Activated C) with gentle exfoliation from buffered Salicylic Acid to target the mechanisms that make discoloration more noticeable. Together they support a more even distribution of pigment and slough away surface cells that can dull skin.

• Activated C: helps visibly reduce dark spot color and intensity.
• Buffered Salicylic Acid: exfoliates surface skin for improved clarity.
• Fast-absorbing base: allows active ingredients to penetrate without heavy residue.

When will I see results and what clinical data supports it?

Clinical grading reported visible improvements in skin clarity and radiance within weeks of regular use. Results vary by individual, but studies showed most participants experienced measurable benefits in both spot intensity and overall brightness.

• Visible clarity improvements noted in clinical testing at one week.
• After 12 weeks, 97% showed reduced dark spot intensity in expert grading.
• Radiance increases were reported in 93% of study participants after prolonged use.

How should I use it in my daily routine for best effect?

Apply the serum to cleansed skin once or twice daily depending on tolerance; use sparingly as a spot treatment on targeted areas or across the whole face for overall brightening. Always follow with sunscreen during the day to protect results and prevent new discoloration.

• Morning and/or evening on clean, dry skin.
• Use a pea-sized amount for full-face application; dot for spot treatment.
• Finish with moisturizer and daytime SPF to help maintain improvements.

Is this formula suitable for my skin type and tone?

The serum was tested across 47 skin tones and on multiple ethnicities, and was formulated to be compatible with a range of skin types, including sensitive skin. Its buffered exfoliant aims to be effective yet gentle when used as directed.

• Tested on all ethnicities and a wide range of skin tones.
• Suitable for normal, dry, combination, oily, and sensitive skin types.
• Can be incorporated into targeted spot treatment or full-face regimens.

Who is this for: Kiehl's Clearly Corrective Dark Spot Serum is for anyone looking to visibly reduce the appearance of dark spots, discoloration, and uneven tone while improving skin smoothness and radiance. It's especially useful for people who want a clinically-studied, multi-use serum that can be applied selectively to stubborn spots or used across the face as part of a daily brightening routine. If you have concerns about sensitivity, start with once-daily application and follow with SPF during daytime use.

Ingredients

AQUA / WATER • PROPYLENE GLYCOL • GLYCERIN • ALCOHOL DENAT. • PEG/PPG/POLYBUTYLENE GLYCOL-8/5/3 GLYCERIN • HYDROXYPROPYL TETRAHYDROPYRANTRIOL • 3-O-ETHYL ASCORBIC ACID • PPG-6-DECYLTETRADECETH-30 • PHENOXYETHANOL • SALICYLIC ACID • XANTHAN GUM • HYDROXYETHYLCELLULOSE • POTASSIUM HYDROXIDE • CITRIC ACID • SODIUM CITRATE • TOCOPHERYL ACETATE • LAVANDULA ANGUSTIFOLIA OIL / LAVENDER OIL • DISODIUM EDTA • ADENOSINE • LINALOOL • BUTYLENE GLYCOL • TOCOPHEROL • CITRUS AURANTIUM TACHIBANA PEEL EXTRACT • PAEONIA SUFFRUTICOSA ROOT EXTRACT