How to Make a Face serum to Rejuvenate the Skin

To prepare the face serum you need:

2 ml of 70% glycolic acid solution
9 ml of rose water or distilled water
10 ml of pure aloe vera gel
1 ml of glycerina
a pinch of ascorbic acid

For the preparation of this serum you must use a jar of well-stered glass with a hermetic closure. Do not use metal containers.