Spot-fading, mark-fading and whitening synergistic composition containing mandelic acid and having targeted transdermal delivery function as well as preparation method and application of spot-fading, mark-fading and whitening synergistic composition

The invention provides a spot-fading, mark-fading and whitening synergistic composition containing mandelic acid and having a targeted transdermal delivery function. Compared with the prior art, the spot-fading mark-fading whitening synergistic composition provided by the invention has the advantages that the exfoliating active matter containing high-concentration mandelic acid is arranged on the outermost layer and is released firstly, so that the pigmentation formed on the epidermis can be quickly faded; the inner layer contains high-concentration phenylethyl resorcinol and other whitening active ingredients, and can permeate into a melanocyte target part of the substrate layer, so that the effects of blocking blackening and inhibiting blackening from the source are efficiently exerted; the skin care concept of highly conforming to accurate release is realized through an inner water phase, an oil phase and an outer water phase; in addition, dual anti-allergy peptides are also added into the oil phase, so th