The Vitamin C Serum Your Skin Has Been Waiting For
Radiant. Even. Visibly brighter — from the very first weeks.One of the first things I tell clients about Vitamin C is this: the form matters as much as the percentage. Many serums on the market use L-Ascorbic Acid, which is unstable — it starts breaking down the moment it meets light and air, and by the time a bottle is half finished, it may have lost much of its brightening power. If your Vitamin C serum has ever turned yellow or orange in the bottle, that is exactly what has happened.
The C 15 Skin Glow Serum uses 3-O-Ethyl Ascorbic Acid — a stabilized form of Vitamin C that stays potent from the first pump to the last. It absorbs well, converts to active Vitamin C in the skin, and delivers real brightening results without the irritation that high-strength traditional Vitamin C can cause, particularly on sensitive skin.
At 15%, this is a professional-strength serum I am confident recommending for daily use — on all skin types, including sensitive and reactive skin.
- Visibly fades dark spots and post-breakout marks with regular daily use
- Helps even skin tone — reduces the visible disparity between hyperpigmented and unaffected areas
- Antioxidant protection against free radicals from UV, pollution, and environmental stressors
- Promotes a visibly more radiant, luminous complexion — noticeable improvement in overall skin glow
- Supports collagen for improved skin texture and the reduced appearance of fine lines with consistent use
- Stable formula — stays fresh and effective from first use to last, no oxidation, no colour change
A Clean Formula. Nothing Your Skin Does Not Need.
Small batch. Purposefully curated. Made in Canada.When I curated the C 15 Skin Glow Serum, I wanted a formula that was straightforward — high-quality actives, nothing added that does not serve a purpose. No mineral oil, no hydroquinone, no artificial fragrance or dyes. A serum your skin can trust every morning without question.
It is produced in small batches in Canada, which means tighter quality control and a fresher product from the time it leaves the facility to the time it reaches you. I formulated the Skin Glow collection with the Canadian complexion in mind — skin that navigates cold dry winters, summer UV intensity, and everything in between. This serum is designed to support it through all of it.
Aqua (Purified Water), 3-O-Ethyl Ascorbic Acid, Propanediol, Ethoxydiglycol, Alcohol Denat, Hydroxyethylcellulose, Hydroxyacetophenone, 1,2-Hexanediol, Caprylyl Glycol, Tetrasodium Glutamate Diacetate, Sodium Citrate, Lavandula Angustifolia Oil, Sodium Hydroxide.
How I Recommend Using the C 15 Serum
Morning. Every day. That is the protocol.Vitamin C is a morning ingredient. Applied before your moisturizer and SPF, it sits in the skin ready to neutralize free radicals as UV exposure begins throughout the day. Applying it at night instead is not wrong, but you lose the protective benefit that makes it particularly valuable during the day. Make it part of your morning routine and keep it there.
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01
Cleanse + Tone Start with the Skin Glow Illuminating Cleanser and Toner. Clean, prepped skin absorbs the serum more effectively and gives the Vitamin C the best surface to work with.
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02
Apply C 15 Serum Dispense 3–4 drops into your palm and press gently into face and neck — do not rub. Give it about 60 seconds to absorb before moving to the next step.
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03
Moisturize Follow with the AZA C Radiance Creme or Your Daily Glow Youth Defence Cream. A good moisturizer over your serum supports the barrier and helps lock in the benefits.
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04
Apply SPF 50 SPF 50 is non-negotiable — especially when you are working on brightening and pigmentation. Vitamin C and SPF work together. One does not replace the other.
If retinol or acids are part of your routine, keep those for the evening. Vitamin C in the morning, renewal actives at night — that is the sequence I recommend to all my clients. Visible change in skin tone comes from consistency over several weeks, not from doubling up on actives at once.
Is the C 15 Skin Glow Serum Right for You?
All skin types. Every age. Every tone.I recommend this serum to a wide range of clients — from those who are new to Vitamin C and want to start with something their skin will respond to well, to those who have tried traditional Vitamin C serums before and found them irritating or unreliable. The stabilized form we use here is genuinely better tolerated, including by sensitive, reactive, and rosacea-prone skin.
- Skin dealing with dark spots, post-breakout marks, or sun damage and uneven skin tone
- Anyone managing melasma or hormonal pigmentation alongside professional treatment
- Sensitive or reactive skin that has not tolerated traditional L-Ascorbic Acid Vitamin C serums
- Skin showing early signs of ageing — visible fine lines, loss of radiance, and early texture change
- Anyone wanting daily antioxidant protection against UV oxidative damage — particularly in summer months
- Clients who have tried Vitamin C before and want a stable formula that actually stays effective through the whole bottle
Small Batch. Purposefully Made.
"The skin concerns I see most often in my Toronto clients are uneven skin tone, dark spots, and the dullness that builds up from daily UV exposure. I built the Skin Glow collection specifically to address that — and the C 15 Serum is the heart of it."
I chose 3-O-Ethyl Ascorbic Acid because it is the Vitamin C derivative I trust the most. It stays stable, it works across all skin types, and it delivers results that are visible to the client — not just on a clinical chart. After over 40 years of treating skin, that is what matters to me most.
My Favourite Pairing — C 15 With Evolve Exosomes
Brighter tone. Deeper vitality. One morning routine.When clients ask me what I would add to a Vitamin C routine to take it further, my answer is consistently the ECO Pink Evolve Exosomes Bio Serum. The C 15 works on skin tone — brightening, protecting, and addressing pigmentation at the surface. The Evolve Exosomes work deeper, supporting the skin's own communication and repair at a cellular level.
Together, they complement each other without overlap. Apply the C 15 first on freshly toned skin, let it absorb fully, then layer the Exosomes over top before your moisturizer. Your skin gets antioxidant defense, brightening, hydration, and cellular support — all in one morning routine.
- Apply C 15 first on freshly toned skin — allow 60 seconds to absorb
- Apply Evolve Exosomes over the C 15 — the exosome formula layers cleanly over Vitamin C
- Finish with moisturizer and SPF 50 — both serums benefit from the barrier support that follows
Plant-derived exosomes from turmeric, ginseng, aloe, and citrus fruits — a cellular communication serum that supports the appearance of hydrated, resilient, luminous skin. Complements Vitamin C for a complete morning brightening and protection protocol.
Shop Evolve Exosomes