Unlike regular moisturizing creams, which only temporarily improve the comfort and feel of the skin whilst the product is applied, all cosmeceuticals aim to:
Different actives have different effects, eg. some lighten hyperpigmentation, some exfoliate to reveal smoother, more radiant skin and others can cause an increase in collagen levels etc. The actives used generally fall into 7 categories; antioxidants, anti-inflammatories, hydroxy acids, ceramides, vitamins, peptides and specific actives addressing hyper-pigmentation.
Extreme care must be taken in combining actives from different groups as some will clash when combined rendering each useless. Other combinations create vastly improved synergistic effects. Knowing which combinations are best for certain skin types or environmental conditions requires the expertise of both the cosmetic formulator and the cosmetic chemist.