Magnesium Ascorbyl Phosphate Powder, Stable Vitamin C, MAP Powder for DIY Skincare (56 Grams)

Key Benefits of MAP Powder for Skincare

One of the standout benefits of Magnesium Ascorbyl Phosphate (MAP) is its ability to maintain skin hydration. By helping the skin retain moisture, it supports a plump, healthy-looking complexion. Additionally, as a form of vitamin C, MAP provides antioxidant support that helps protect the skin from environmental stressors such as UV exposure and pollution.

Another advantage is its compatibility with niacinamide. Because MAP and niacinamide share a similar pH range (around 5.0–6.0), they can be used together in formulations without causing irritation or reducing efficacy. This allows you to create synergistic products that combine the brightening effects of vitamin C with the soothing and balancing properties of niacinamide.

What Is Magnesium Ascorbyl Phosphate (MAP)?

Magnesium Ascorbyl Phosphate (MAP) is a stable, water-soluble derivative of vitamin C. Unlike L-ascorbic acid, which can degrade quickly when exposed to light and air, MAP remains effective for longer periods, making it a popular choice for DIY skincare formulations. This powder form allows you to customize your own serums, creams, and lotions with the benefits of vitamin C without the instability concerns.

MAP is synthesised by esterifying ascorbic acid with phosphoric acid and then neutralising with magnesium. This process creates a molecule that is less acidic than pure vitamin C, which means it is gentler on the skin while still delivering antioxidant properties. Many skincare enthusiasts and formulators turn to MAP for its versatility and compatibility with other active ingredients.

Why Choose MAP Over Other Vitamin C Forms?

Vitamin C comes in several forms, each with its own advantages. L-ascorbic acid is potent but unstable and acidic, which can cause irritation for some skin types. Sodium ascorbyl phosphate (SAP) is another stable derivative, but it has a higher pH and may not be as effective at low concentrations. MAP strikes a balance: it is stable, gentle, and effective at supporting skin hydration and antioxidant defense.

MAP is also less likely to cause stinging or redness compared to L-ascorbic acid, making it suitable for sensitive skin. Its powder form gives you full control over the concentration in your DIY products, allowing you to tailor formulations to your specific needs.

How to Use MAP Powder in DIY Skincare

MAP powder is easy to incorporate into your home-made skincare recipes. The typical usage rate is 1–5% of the total formula weight, depending on the desired concentration. For a simple vitamin C serum, you can dissolve MAP powder in distilled water or a hydrosol, then add a preservative to prevent microbial growth.

A basic recipe might include:

• 2 grams MAP powder (for a 2% concentration in a 100g batch)
• 95 grams distilled water or aloe vera juice
• 1 gram preservative (such as Optiphen or Leucidal)
• 2 grams glycerin (optional, for added hydration)

Frequently Asked Questions

How should I store MAP powder? Keep the powder in a cool, dry place away from direct sunlight. Seal the bag tightly after each use to prevent moisture absorption.

Can I use MAP powder in oil-based products? MAP is water-soluble, so it is best used in water-based formulas. For oil-based products, consider using a lipophilic vitamin C derivative like ascorbyl tetraisopalmitate.

Does MAP powder expire? Yes, it has a shelf life of about 2 years when stored properly. The product you receive will have a manufacture date; use within that timeframe for best results.

Is MAP safe for use during pregnancy? Magnesium ascorbyl phosphate is generally considered safe for topical use during pregnancy, but always consult with a healthcare professional before introducing new skincare ingredients.

Safety and Storage

For external use only. Avoid contact with eyes. If irritation occurs, discontinue use. Keep out of reach of children. This product is intended for cosmetic formulation purposes and is not meant for direct consumption. When formulating, always use appropriate preservatives to ensure product safety. Always read the label and follow directions for use.

These statements have not been evaluated by Health Canada. This product is not intended to diagnose, treat, , or prevent any disease.