Studies have found that bird's nest contains a very important polypeptide substance - epidermal growth factor, which is EGF. EGF can promote the proliferation and differentiation of epidermal cells, so that the aging and dead cells can be replenished in time, and the damaged epidermis can be repaired immediately.
The extract of bird's nest can inhibit the activity of tyrosinase, and it is found that free sialic acid is the main whitening active component of bird's nest.
The extract of bird's nest has strong antioxidant capacity.