Description
Obagi Professional-C Serum 20% is the most concentrated vitamin C serum in the Professional-C range and one of Obagi’s bestsellers. It is made with 20% L-ascorbic acid, the pure form of vitamin C, with ascorbyl glucoside and sodium hyaluronate.
As a powerful daily antioxidant it helps fortify the skin’s defences against environmental stressors, and with regular use helps improve the look of fine lines, wrinkles and uneven skin tone, so skin appears younger-looking for longer.
Key benefits
- 20% L-ascorbic acid, the most concentrated in the range
- Helps fortify skin against environmental stressors
- Helps improve the look of fine lines, wrinkles and uneven tone
- Sodium hyaluronate adds light hydration
How to use
- Apply 5 drops to the face and neck once daily, in the morning after cleansing and toning.
- Allow to absorb, then follow with moisturiser and a broad-spectrum sunscreen.
- Store tightly closed, away from heat and light.
Pairs well with
- Obagi Professional-C Serum 15%: a gentler 15% strength if your skin needs to build up.
- Obagi Professional-C Microdermabrasion Polish + Mask: a vitamin C polish and mask to use 2 to 3 times a week.
- Obagi Hydrate Facial Moisturiser: a lightweight moisturiser to apply after the serum.
- Heliocare 360 Sensation SPF 50+: a broad-spectrum SPF 50+ for daytime.
Ingredients
propylene glycol, aqua/water/eau, ascorbic acid, alcohol denat., ascorbyl glucoside, ethoxydiglycol, phenoxyethanol, sodium hyaluronate, sorbitol, citrus aurantium dulcis (orange) peel extract, citrus paradisi (grapefruit) fruit extract, fragrance (parfum), caprylyl/capryl glucoside, calcium hydroxide, zinc chloride, citric acid, benzyl benzoate, amyl cinnamal, limonene, hexyl cinnamal
Good to know
- Contains active ingredients: read our Active Ingredients guide before use.
- Use a broad-spectrum sunscreen during the day.
- A slight tingling may occur on application. Stop use if irritation persists.
- Contains fragrance.
- Ingredient list from Obagi’s current formula; always check the pack you receive.
- Patch test on a small area first and stop use if irritation occurs.
- For external use only. Keep out of reach of children.
Results vary from person to person.

