To introduce you to their usual distinguish between good and bad emulsion a little experience
Tools/Materials
1
A glass of water
2
Two lotions of different quality
Methods/Steps
1
To prepare two cups, put the two lotions in the size of a mung bean. One cup of water will sink and one cup of water will turn milky white.
2
Related content learned from experience
Matters needing attention
Be careful to put the same amount of lotion in two cups of water, not one more or one less