This Qi Cao Gang Mu cream is a 100% authentic product. It is a ready stock product that can be used for a variety of skin conditions such as eczema, psoriasis, pruritus, dermatitis, ringworm, rashes, prickly heat, mosquito bite, etc. The cream is 20g in size and is a great option for those looking for a natural and effective way to treat a variety of skin conditions.