Obagi Professional-C Serum 15% | Vitamin C Serum for Normal to Dry Skin

The mid-concentration in the Obagi Professional-C Serum range. Fifteen percent L-Ascorbic Acid provides powerful antioxidant protection, visible brightening and collagen support with a profile better suited to normal and dry skin types than the 20% maximum-strength formula. Strong enough to produce meaningful daily environmental defence and progressive brightening. Formulated to be tolerable for daily morning use on skin types that would find 20% too stimulating.

The same L-Ascorbic Acid mechanism as the 10% and 20% concentrations: free radical neutralisation against UV, blue light and infrared oxidative stress, tyrosinase inhibition for brightening, and collagen synthesis support. At 15%, this is the appropriate step up from 10% for skin that has established tolerance and wants greater activity, and the appropriate starting point for normal skin types confident in their L-Ascorbic Acid tolerance.

Who Is It For?

• Normal to dry skin wanting strong daily Vitamin C antioxidant protection and brightening
• Those progressing from Professional-C 10% who have established tolerance and want more activity
• Significant photodamage, dullness and dark spots requiring more than the entry concentration can produce
• Those on GLP-1 medications wanting daily antioxidant protection with a formulation suited to drier skin

How Does It Work?

L-Ascorbic Acid at 15% provides strong antioxidant free radical neutralisation, tyrosinase inhibition for brightening and collagen synthesis cofactor support. Sodium Hyaluronate maintains skin hydration during daily high-concentration Vitamin C use, appropriate for the drier skin types for which 15% is particularly well suited.

Key Ingredients

• L-Ascorbic Acid 15%: Strong daily antioxidant, brightening and collagen-supporting Vitamin C at the mid-programme concentration, appropriate for normal to dry skin with established Vitamin C tolerance.
• Sodium Hyaluronate: Supports skin hydration alongside the active Vitamin C delivery.

Benefits

• Strong daily antioxidant protection against UV, blue light and infrared oxidative damage
• Brightens and reduces dark spots through L-Ascorbic Acid tyrosinase inhibition
• Supports collagen and elastin production
• More appropriate for normal to dry skin than the 20% maximum-strength formula
• Progression step from Professional-C 10% for established Vitamin C users

What Results Can You Expect?

At 4 weeks: improved radiance and early brightening with consistent morning use. At 8 to 12 weeks: visible improvement in dark spots and skin tone evenness. Long-term: comprehensive antioxidant protection and progressive brightening.

How We Use It at Face for Soul

As a pharmacist prescriber specialising in skin health, Professional-C 15% is the Vitamin C concentration I recommend most frequently for normal to dry skin patients in active anti-ageing and brightening programmes. Strong enough to produce meaningful results, appropriate in formulation for the skin types that find 20% too stimulating.

How to Use

Apply 5 to 7 drops to clean skin morning before moisturiser and SPF. Store in a cool, dark place and use within 3 to 6 months of opening.

Frequently Asked Questions

Should I start at 15% or 10%?
If new to L-Ascorbic Acid, start at 10%. If you have used Vitamin C serums previously without irritation, 15% is an appropriate starting point for normal to dry skin.

Can I use it with tretinoin?
Yes, in the morning only. Apply tretinoin in the evening.

Is it pregnancy safe?
No established pregnancy contraindications. Consult your midwife or obstetrician.

Is it suitable for rosacea-prone skin?
Better tolerated than 20%. Start with 10% if your rosacea is reactive. Progress to 15% when 10% is comfortable.

Clinical Insight

As a pharmacist prescriber, Professional-C 15% is the Vitamin C concentration where most of my normal to dry skin patients settle for consistent daily morning antioxidant protection. Strong enough to produce the results that make daily Vitamin C use clinically worthwhile, appropriate for skin types that need it to be formulated for their level of tolerance.

Complete Your Routine

Morning: Obagi cleanser, Obagi Professional-C Serum 15%, Obagi Hydrate or Hydrate Luxe, Obagi Sun Shield SPF 50.

Why Buy From Face for Soul?

At Face for Soul, Professional-C 15% is the mid-strength daily Vitamin C for normal to dry skin patients in anti-ageing and brightening programmes. Contact us if you have questions about which concentration is right for your skin type and tolerance.