Stability of Natural Extracts in Low pH Serum for DIY Use
Question
I understand that adding natural extracts like calendula extract to a serum with a low pH (around 3.5) can cause the extract's effectiveness to degrade faster than usual. If I make this serum myself and use it up within 2-4 weeks, is it correct that I don't need to be concerned about the degradation of the extract's effectiveness during this short period?
Answer
Based on the staff's reply, your understanding is correct.
Adding natural extracts like calendula extract to a low pH serum (around 3.5) can cause the extract's effectiveness to degrade faster. However, if you use the product within 2-4 weeks, the degradation might not be a significant concern.
The staff also recommended refrigerating the serum to help slow down the degradation of ingredients.