Recommended Usage for Complex Salicylic Acid with Oligopeptide-10

When formulating an acne spot gel using 4% Oligopeptide-10 (Pep®-Acne) and Complex Salicylic Acid (Powder, Water-Soluble), a suitable percentage for the Complex Salicylic Acid would be up to 5%.

Here's why:

• Complex Salicylic Acid (Powder, Water-Soluble) has a recommended usage rate of 1-5%.
• Using 5% of this complex provides the maximum allowed concentration of pure Salicylic Acid in a cosmetic formulation, which is 2%.
• The description for Pep®-Acne mentions that using it with Salicylic Acid can help reduce potential skin irritation from the Salicylic Acid.

Therefore, using up to 5% Complex Salicylic Acid (Powder, Water-Soluble) in combination with 4% Pep®-Acne is appropriate for an acne spot treatment, allowing you to achieve the maximum effective concentration of Salicylic Acid while potentially benefiting from the irritation-reducing properties of Oligopeptide-10.