Feasibility and characteristics of a specific brightening sleeping mask formulation

Based on the list of ingredients and percentages provided, it is technically possible to create a sleeping mask formulation. The formula includes several active ingredients known for brightening and anti-aging properties, such as Niacinamide, Acetyl Glucosamine, Vitamin C, Glutathione, and Yeast Radiance.

However, there are a few points to consider:

• Texture: The percentage of Natto Gum (5%) is quite high and might result in a texture that is too thick or sticky for a typical sleeping mask. You may need to adjust this percentage to achieve a more desirable consistency.
• Active Concentration: The concentrations of some actives, particularly Niacinamide (10%) and Vitamin C (10%), are high. While potentially effective, combining multiple high-concentration actives can increase the risk of skin irritation, especially for sensitive skin.
• UV Filters: The inclusion of UV filters (Protec™ UV, Protec™ SQ) is unusual for a sleeping mask, as these are typically used in daytime products for sun protection. They may have been included for product stability, but they are not necessary for overnight skin benefits.

In summary, the formulation is feasible, but you might need to experiment with the percentages of Natto Gum to optimize the texture and be mindful of the high active concentrations which could potentially cause irritation. The UV filters are not essential for a sleeping mask.