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An advanced yet gentle Vitamin C serum that instantly and visibly brightens skin while helping improve the look of uneven tone, texture, firmness, and other visible signs of ageing.
Helps skin look instantly brighter with L-ascorbic acid (pure vitamin C)
Clinically proven to improve visible signs of ageing*
Ferulic acid & vitamin E boosts skin's defenses while stabilizing vitamin C
Our most advanced pure vitamin C serum for instant and visible brightening.
This clinically proven serum is powered by 15% L-ascorbic acid, the purest and most active form of vitamin C, to instantly brighten skin while visibly improving uneven tone, texture, fine lines, wrinkles, and loss of firmness. L-ascorbic acid is intentionally combined with ferulic acid and vitamin E to create a highly potent, non-irritating serum that remains gentle enough for twice daily use.
Along with boosting vitamin C’s stability, these additional antioxidants also increase skin’s protection against the environmental stressors that trigger dark spots, discolouration, and premature skin aging. Suitable even for sensitive skin, this brightening serum boosts skin’s hydration while absorbing quickly, without an oily or greasy residue. When used consistently, it leaves skin looking smoother, more even, and noticeably more radiant.
94% agree skin looks brighter and more even* *Based on self-assessments from an independent clinical study of 30 subjects after 4 weeks.
100% agree skin texture looks improved* *Based on self-assessments from an independent clinical study of 30 subjects after 4 weeks.
Because skincare works best when it suits your skin type.
Wash your face with a gentle cleanser and wait 15-30 minutes. Select what you see and how you feel.
15% Vitamin C (L-Ascorbic Acid)Visibly brightens and firms while defending against signs of ageing.
Vitamin EBoosts vitamin C and helps defend against environmental stressors.
Ferulic Acid
Reduces visible discolouration. Stabilises vitamin C to minimise irritation.
Water (Aqua/Eau), Ascorbic Acid, Dipropylene Glycol, Propanediol, Glycerin, Ethoxydiglycol, Sodium Hydroxide, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Bisabolol, Ferulic Acid, Sodium Phytate, Decylene Glycol, Tocopherol, 1,2-Hexanediol, Sphingomonas Ferment Extract, Phenoxyethanol. [IL439v2]
How to use a serum
Apply once or twice daily after cleansing, toning and exfoliating. Dispense 2–3 drops and add to your favourite moisturiser or serum. May also be used alone. For daytime, follow with a broad-spectrum sunscreen rated SPF 30 or greater. May be applied around the under-eye area. WARNINGS If the product enters the eye, wash out thoroughly with plenty of clean water.
The new C15 Super Booster features the same 15% pure vitamin C in a formula designed for improved stability and a more consistent experience from first use to last drop. We streamlined the formula to focus on the ingredients that matter most, helping minimise oxidation and improve how the product feels on skin—lightweight, Fast-absorbing, and easy to layer. The result is a vitamin C booster that helps improve radiance and remains suitable for everyday use.
This vitamin C booster helps brighten dull skin, improve the look of uneven tone, and support firmer-looking skin over time. Its antioxidant benefits also help defend against environmental stressors, leaving skin looking more radiant and refreshed.
With the C15 Super Booster, skin looks instantly brighter from the first application. Within one week, hydration is visibly improved, and after four weeks, skin feels smoother, tone appears more even, and dullness is noticeably reduced—while fine lines look softened. With continued twice-daily use, skin becomes visibly brighter and more radiant over time.
C15 Super Booster contains 15% pure vitamin C (ascorbic acid) and is a good option for daily use to help improve the look of dullness and uneven tone. It can be used on its own or mixed into a serum or non-SPF moisturizer. 25% Vitamin C + Glutathione Clinical Serum uses vitamin C derivatives and is better suited for more advanced concerns like uneven tone, discoloration, and loss of firmness. You can use either product on its own or both in the same routine, depending on your skin concerns and tolerance. If using both, start slowly and adjust as needed.
Yes, and we recommend it. Vitamin C and sunscreen complement each other for daytime use. Apply the C15 Super Booster after cleansing, then finish your morning routine with a moisturiser rated SPF 30 or greater. If you prefer to mix the booster into a moisturizer, choose a non-SPF moisturiser so you do not dilute your sun protection.
Yes. To get the best results, we recommend using vitamin C in the morning (to brighten and even skin tone) and retinol or retinal at night (to smooth skin and target signs of ageing). Introduce them gradually to ensure your skin tolerates the combination well.
Yes. These two ingredients work well together and can be used in the same routine. Vitamin C boosts radiance and fades discoloration, while niacinamide calms the skin and visibly minimizes pore size. This combination is generally well-tolerated, but it's always best to start slowly if you have sensitive skin.
Yes. The C15 Super Booster is designed to work well with most skincare products without reducing its effectiveness. The only ingredient to keep separate is copper peptides, as they can make pure vitamin C less effective. If you use both, apply one in the morning and the other at night. Otherwise, vitamin C pairs well with a wide range of ingredients, including antioxidants, niacinamide, AHA, BHA, and PHA. You can use it on its own or mix a few drops into your favorite serum or non-SPF moisturiser for added convenience.
This vitamin C formula does not contain ingredients typically restricted during pregnancy. However, if you have questions about starting a new product while pregnant or breastfeeding, speak with your healthcare provider.
C15 Super Booster can range from clear to pale peach or amber. That colour variation is normal, and vitamin C may darken over time. For best results, store your C15 Super Booster in a cool, dark place away from direct sunlight and excess heat. Keep the cap tightly closed when not in use. Once opened, using it within 3 months helps ensure optimal freshness and performance. Tip: Use a Sharpie-like marker to write the date you opened it on the bottom of the bottle to help keep track.