Goldwell Biocurl Perm No. 0 transforms even the most resistant hair by creating rippling waves and lively, tight curls with a delicate herbal formula. Blended with Vitamin C and herbal extracts, Biocurl Perm No. 0 provides a naturally infused perming solution that is suitable for one application per pack. Difficult hair is bathed in nourishing extracts, giving it a healthy, smooth texture that blossoms with curls and dimension. Single Pack.