Substitution of LAA Ultra Fine in C E Ferulic Kit

Regarding your question about substituting LAA ultra fine with LAA fine in the Vitamin C E Ferulic kit:

• The Vitamin C Ultra-Fine grade is currently back in stock.
• You can use Vitamin C grade Fine as a substitute.
• However, using the Fine grade will require a longer time for dissolution compared to the Ultra-Fine grade.
• Provided the Fine grade is completely dissolved, the final efficacy of the formulation will not be different.