Magnesium Ascorbyl (MAP)
Magnesium Ascorbyl Phosphate (MAP)
VC-PMG
Vitamin C Derivative
Stability
8/10
Excellent
Irritation Risk
Very Low
for most skin types
Bioavailability
5/10
skin absorption
pH Needed
pH 6.0–7.0
for efficacy
What Is It?
The hydration hero of Vitamin C derivatives. MAP is a water-binding form of Vitamin C that uniquely moisturizes the skin while brightening. It's the gentlest option available and works beautifully for dry and mature skin types.
🔬 The Science
The magnesium salt form creates a hygroscopic molecule that attracts water to the skin. When converted to LAA by phosphatase enzymes, it provides vitamin C's antioxidant and melanin-inhibiting effects.
⚗️ Stability Note
Stable at neutral pH. Requires proper formulation to avoid hydrolysis issues.
Optimal Concentration
Available Range
5%–10%
Our Recommendation
5%–10%
Best For
- Dry Skin
- Sensitive Skin
- Brightening with Hydration
- Mature Skin
Avoid If
- Those seeking strong depigmentation
Top-Rated MAP-Based Serums
#7

Mamaearth
Mamaearth Vitamin C Face Serum
80/100
Very Good
Magnesium Ascorbyl (MAP)Best Budget Buy
brighteninghydrationhyperpigmentation
₹549/ 30ml
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