Vitamin C Serum-in-Oil

Vitamin C Serum-in-Oil by Skin Diligent features a rare oil-soluble form of vitamin C that penetrates quickly and deeply, delivering powerful antioxidant benefits at the cellular level, without the irritation or instability commonly associated with traditional vitamin C products.

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Skin Diligent’s Vitamin C Face Oil

This innovative serum-in-oil blends high potency with exceptional skin tolerance. It harnesses lipid-stabilised vitamin C to nourish the skin while protecting it from oxidative stress.

Unlike water-soluble vitamin C forms that often degrade or irritate the skin, this rare lipid form remains stable and effective—absorbing effortlessly to act directly where the skin needs it most.

The non-greasy oil texture deeply hydrates, visibly boosts glow, and fortifies the skin’s natural defences day after day.

Benefits of the Vitamin C Serum-in-Oil

• Potent antioxidant action: neutralises free radicals and calms inflammation.
• Brighter, more even complexion: helps fade dark spots, smooths skin texture, and supports healthy melanin regulation.
• Deep hydration & nourishment: strengthens the skin barrier and limits transepidermal water loss.
• SPF-boosting effect: non-photosensitising, enhances your sun protection.
• Anti-ageing results: firms the skin and helps delay visible signs of ageing.
• Blemish support: helps reduce breakouts and accelerates skin recovery.

Why choose Skin Diligent’s Vitamin C Serum?

• Ultra-gentle formula: suitable for all skin types, even sensitive or reactive skin.
• Fast-absorbing texture: lightweight and non-oily, works in any routine.
• 99.7% naturally derived: clean beauty without compromise.
• Endocrine-safe: tested free from oestrogenic disruptors.
• Safe for pregnancy, breastfeeding, and post-hormonal cancer treatments.
• Clinically proven results: boosts hydration and reduces water loss within 2 hours (instrumental tests on 20 women aged 20 to 60).

Key ingredients

Ascorbyl Tetraisopalmitate: This biotech oil-based derivative of vitamin C offers superior absorption without the irritation of conventional ascorbic acid. It supports collagen synthesis, defends against dark spots and UV-induced damage, and promotes skin firmness and elasticity. Its unique ability to modulate melanin production gives the complexion a more radiant, even tone—delivering results that outperform many other vitamin C derivatives.

Natural vitamin C serum suitable for all skin types.

How to use Skin Diligent Vitamin C Serum-in-Oil

Every morning (if you're not photosensitive), apply 3-4 drops to slightly damp skin or immediately after using Cellular Hydration Serum.

Shake before use. Avoid the eye area.