這個說穿了就是防腐劑
SymSave H is a multifunctional cosmetic ingredient with anti-oxidant and soothing characteristics. It is a multifunctional product protectant used in skin care and personal care products. It is cleangredients approved. Redness reducing.
在化妆品中一般用作防腐剂，安全性高。
【Hydroxyacetophenone】
A handy multifunctional ingredient that works as a preservative booster, as well as an antioxidant and soothing agent.
https://incidecoder.com/ingredients/hydroxyacetophenone
》Allergies/immunotoxicity
＊CONCERN
One or more human case studies show equivocal any or allergenic effects
》This ingredient is not currently on EWG's Skin Deep Restricted or Unacceptable Lists.
https://www.ewg.org/skindeep/ingredients/862367-HYDROXYACETOPHENONE/