L-Ascorbic Acid (LAA)
Pure Vitamin C
3/10
Irritation: High pH Below 3.5 Bioavail: 10/10

The gold standard of Vitamin C. L-Ascorbic Acid is the most researched and bioavailable form, but also the most unstable. It requires a low pH (below 3.5) to penetrate the skin and work effectively.

Best for: Hyperpigmentation, Photoaging, Collagen Synthesis
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Ethyl Ascorbic Acid (EAA)
3-O-Ethyl Ascorbic Acid
9/10
Irritation: Low pH pH 4.5–6.5 Bioavail: 8/10

The best all-rounder Vitamin C derivative for Indian skin. EAA offers exceptional stability even in warm conditions, making it ideal for India’s climate. It converts to pure Vitamin C upon absorption.

Best for: Sensitive Skin, Indian Climate Use, Beginners, Year-round use
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Sodium Ascorbyl Phosphate (SAP)
Stay-C® 50
9/10
Irritation: Very Low pH pH 5.5–7.0 Bioavail: 6/10

The dermatologist’s choice for acne-prone skin. SAP has an added antibacterial property — it fights Cutibacterium acnes while brightening skin simultaneously.

Best for: Acne-Prone Skin, Oily Skin, Sensitive Skin
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Magnesium Ascorbyl Phosphate (MAP)
VC-PMG
8/10
Irritation: Very Low pH pH 6.0–7.0 Bioavail: 5/10

The hydration hero of Vitamin C derivatives. MAP is a water-binding form that uniquely moisturizes while brightening. The gentlest option available.

Best for: Dry Skin, Sensitive Skin, Brightening with Hydration, Mature Skin
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Ascorbyl Glucoside (AA2G™)
Vitamin C Glucoside
10/10
Irritation: None pH pH 4.0–7.0 Bioavail: 4/10

The most stable Vitamin C derivative available. AA2G is formed by bonding Ascorbic Acid with glucose, creating an incredibly stable molecule that resists oxidation under virtually all conditions.

Best for: All Skin Types, First-time users, Long-term maintenance
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