magnesium ascorbyl phosphate(MAP)

✅INCI Name: Magnesium Ascorbyl Phosphate

✅Molecular Formula: C6H6O9P·Mg

✅Molecular Weight: ~220.4 g/mol

✅CAS Number: 113170-55-1

✅Appearance: White to off-white powder

✅Solubility: Water-soluble

✅pH Range (in solution): 6.0 – 7.5 (optimal stability around neutral pH)

✅Stability: More stable than L-ascorbic acid, particularly against heat, light, and oxidation

Brighten the complexion by inhibiting melanin production, helping to reduce the appearance of dark spots, hyperpigmentation, and uneven skin tone.

Support collagen synthesis, which can improve skin firmness and reduce the appearance of fine lines and wrinkles.

Protect against environmental damage by neutralizing free radicals generated by UV radiation and pollution.

Improve skin hydration, as it may enhance the skin barrier and retain moisture.

MAP is commonly found in serums, moisturizers, lotions, and creams, especially those targeting anti-aging, brightening, or sensitive skin concerns. Its gentle nature makes it a popular choice for those who cannot tolerate the acidity of traditional vitamin C products.

usage rates-

1%–3%: Often used in basic formulations for general antioxidant support and mild brightening.

5%: Considered an effective concentration for brightening skin tone, improving texture, and providing anti-aging benefits.

10%: Higher-end formulations may use up to 10% for maximum efficacy in reducing hyperpigmentation, boosting collagen, and offering antioxidant protection—still with a good safety and tolerance profile.