Adding Vitamin C Ultra-Fine and Allantoin to Powder

Yes, you can add Vitamin C Ultra-Fine (L-ascorbic acid) and Allantoin to powder formulations by simply mixing them in. The ultra-fine particle size of the Vitamin C helps it disperse well in powder.

Absorption from Powder

These ingredients, when in powder form, will be absorbed into the skin when they come into contact with skin moisture, such as natural skin hydration or sweat. The moisture helps dissolve the powder particles, allowing them to penetrate the skin. As the staff reply mentioned, the effectiveness can depend on how moist your skin is, as only the dissolved portion can be absorbed.

Vitamin C Stability in Powder

Vitamin C (L-ascorbic acid) is stable in a water-free powder formula. It is prone to degradation when dissolved in water, so an anhydrous (water-free) powder environment helps maintain its stability.

Allantoin Usage Rate in Powder

Yes, you can use Allantoin up to the maximum recommended rate of 2.0% in a powder formula. While its solubility in water is limited, in a powder, it remains as solid particles until it encounters skin moisture, allowing for potential absorption up to the amount that can be dissolved by the available moisture.