Ingredient substitution in serum due to yeast allergy

I cannot access the specific ingredient list for the formulation "Care & White Serum by kritpecharat (#4774)". Therefore, I cannot identify which ingredient in that serum is related to yeast or what its function is within that specific formula.

Without knowing the specific yeast-related ingredient and its role in the formulation, I cannot recommend a suitable substitute.

If you know the name of the specific ingredient you are allergic to, I might be able to provide information about it or suggest alternatives based on its general properties, but I cannot analyze the specific formulation you mentioned.