Obagi Medical Professional-C Peptide Complex Serum 1 oz — Vitamin C + Peptides for Firmness & Even Tone

Obagi Professional-C Peptide Complex Serum is a vitamin C and peptide serum designed to help improve the look of skin firmness, even skin tone and the appearance of fine lines and wrinkles.

This lightweight 1 oz serum blends a stable form of vitamin C with targeted peptides and plant cytokinins (kinetin, zeatin) to support brighter, smoother-looking skin. The formula is non-comedogenic, dermatologist tested, and formulated for use in daily skincare routines. Ingredients were evaluated in internal consumer testing; the product is part of Obagi Medical’s professional line with three decades of clinical and product development experience.

How does this serum address firmness and fine lines?

The serum combines peptides with vitamin C to support the skin’s appearance and texture. Peptides are short protein fragments that can help support the look of skin elasticity, while vitamin C works as an antioxidant-supportive ingredient to promote a more even surface appearance.

• Contains peptides that target the appearance of skin firmness and smoothness
• Includes a stable vitamin C derivative to enhance skin luminosity
• Formulated for daily application under moisturizer or sunscreen

When will I notice visible improvements in skin tone and texture?

Results vary by individual, but in consumer testing participants reported observable improvements in tone and texture shortly after starting use. The study referenced by the brand notes improvements in as little as one week for some users; individual timelines depend on starting condition and consistent application.

• Consistent morning or evening use yields the most reliable outcomes
• Pair with sunscreen in daytime routines to protect results
• Combine with complementary Obagi products for a full regimen

Is this serum suitable for my skin type and how should I apply it?

The formula is non-comedogenic and designed to be compatible with a wide range of skin types. Apply a few drops to clean, dry skin, gently patting across the face and neck before moisturizer. If you have sensitive skin, introduce the serum gradually and perform a patch test.

• Non-comedogenic—suitable for oily, combination, dry, and normal skin
• Apply after cleansing and before moisturizer; use sunscreen by day
• Start with every other day if sensitivity is a concern

What makes Obagi Professional-C Peptide Complex different from other serums?

This serum combines a stabilized form of vitamin C with multiple active peptides and plant-derived cytokinins in a single formula. Obagi’s professional line emphasizes clinically informed formulations and product testing, aiming to offer targeted support for common signs of aging without heavy textures.

• Stable vitamin C formula paired with peptides and kinetin/zeatin
• Lightweight texture that layers well with other treatments
• Part of a clinically informed portfolio developed for professional use

Who is this for: Obagi Professional-C Peptide Complex Serum suits anyone seeking a targeted daytime or nighttime serum to help refine skin tone, reduce the visible appearance of fine lines, and promote a firmer-looking complexion. It is intended for people who prefer a lightweight, non-comedogenic serum that pairs easily with moisturizers and sunscreens, and who want a product developed within a professional skincare line. If you have reactive or very sensitive skin, consult a skincare professional before introducing new active ingredients.

Ingredients

Water (aqua), prunus amygdalus dulcis (sweet almond) oil, caprylic/capric triglyceride, silica, stearic acid, PEG-12 glyceryl dimyristate, glyceryl stearate, PEG-100 stearate, tocopheryl acetate, phenoxyethanol, cetyl alcohol, panthenol, triethanolamine, carbomer, ethoxydiglycol, polyaminopropyl biguanide, disodium EDTA, polyurethane-40, ethlylhexylglycerin, PPG-12/SMDI copolymer, kinetin, zeatin, citrus aurantium dulcis (orange) peel oil, tetrahexyldecyl ascorbate, sodium carboxymethyl beta glucan, acetyl octapeptide-3, imidazolindinyl urea, camellia sinensis leaf (green tea) extract, hyaluronic acid, aloe barbadensis leaf juice powder, hydrochloric acid, magnesium ascorbyl phosphate, rubus idaeus (raspberry) leaf extract