C1 Vitamin C Power 1 Serum
For lit-from-within glowing skin
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The C1 Vitamin C Power 1 Face Serum is formulated with two forms of vitamin C (one oil-soluble, the other water-soluble), which work in synergy with EGT Amino Acid to restore lost radiance and refine the complexion.
Powered by our exclusive TTS³ technology.
Efficacy Unveiled
86% said their skin appeared instantly illuminated.
86% said their skin's clarity had been improved in just two weeks.
83% said their complexion appeared refined in two weeks.*
Supercharged Actives
- 2 forms of vitamin C (one oil-soluble, the other water-soluble) brighten the complexion, improve hyperpigmentation and boost collagen production
- EGT Amino Acid enhances vitamin C activity by ‘recycling’ it, contributing to superior antioxidant protection and illuminating effects
- Niacinamide improves skin’s natural resilience while helping prevent hyperpigmentation
- Tranexamic Acid can lighten pigmentation and dark spots caused by excessive sun exposure
*Results based on an independent user trial on 30 participants over the course of 2 weeks
DESCRIPTION
HOW TO APPLY
THE POWER OF TTS³
INGREDIENTS
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Frequently Asked Questions
C1 is a daily serum that helps improve dullness and texture caused by environmental stress, revealing a brighter and more even complexion. Apply it in the morning and/or in the evening after cleansing and allow it to absorb before following with eye cream, moisturiser and SPF (AM).
If your skin is prone to sensitivity and/or you haven’t used vitamin C-based skincare before, we recommend taking a phased approach to C1. Start with a biweekly application and monitor how your skin reacts before increasing the frequency of use. If you've been diagnosed with a skin condition like eczema, rosacea or contact dermatitis, we recommend talking to your doctor or dermatologist before proceeding with any active ingredients.
Yes, like all Sarah Chapman formulas, C1 is 100% cruelty-free. It’s also vegan and free of SLES, SLS and petrolatum/paraffin/mineral oil.
C1 is specially formulated to help minimise signs of pigmentation – including dark spots and an uneven skin tone – while addressing dullness and texture for a brighter and more uniform complexion.
Applying SPF during the day is essential, especially when using active ingredients like vitamin C. The expert combination of vitamin C and SPF also boosts UV protection to help prevent sun-induced skin damage, which can compromise skin health and lead to premature ageing. For SPF, we recommend using our tinted or invisible Skin Insurance face sunscreen.
If your skin is already acclimated to vitamins A and C and combining the two active ingredients is part of your current daily routine, proceed with applying C1 in the morning and A1 at night for optimal results. For first-time vitamin A and vitamin C users, we recommend gradually introducing the serums into your skincare, starting with a biweekly application. If you notice any signs of irritation, try alternating days until your skin acclimates.
Yes, C1’s carton, lid and bottle are fully recyclable and easy to dispose of after use.
Customer Reviews
This new clinical range is a step ahead of everything I have tried before. I have been using the Vit C every morning and the Vit A every evening since launch, combined with the normal skin care range from Sarah Chapman and it has taken the texture, brightness and glow of the skin on my face and chest to a whole new level. LOVE!
