Legally, ingredients are required to be listed in order, from the highest concentration, to the lowest concentration.
There is a practice called Angel Dusting, that is when a tiny amount of a specific ingredient is added to the formula just to justify the marketing claim, but its concentration is not enough to actually benefit the skin.
An easy trick to check if a skincare product has enough concentration of a specific key ingredient, is to look for some of the common preservatives in the industry:
- Sodium Benzoate
- Glyceryl Caprylate
- Potasssium Sorbate.
These are usually equal or lower to 1% in the formula. So, if key ingredients are listed after them, they are in a concentration lower than 1%, and you are being Angel Dusted!