1. Collagen hydrolyzate used to improve the health of human skin, hair and / or nails, characterized in that at least 90 wt.% Of collagen hydrolyzate have a molecular weight of less than 3,500 Da, and that the collagen hydrolyzate contains at least four typical peptides with a molecular weight between 600 and 1,200 Da. 2. The collagen hydrolyzate according to claim 1, wherein at least 45 wt.% Of the collagen hydrolyzate have a molecular weight of less than 1,500 Da. The collagen hydrolyzate according to claim 1 or 2, wherein at least four typical peptides in the molecular weight distribution determined by MALDI mass spectroscopy have at least twice the intensity, preferably at least four times the intensity compared to their environment. The collagen hydrolyzate according to claim 1 or 2, wherein the collagen hydrolyzate contains a peptide between 620 and 690 Da, a peptide between 790 and 860 Da, a peptide between 980 and 1.050 Da, and a peptide between 1.175 and 1.245 Da. The collagen hydrolyzate according to claim 1 or 2, wherein the collagen hydrolyzate contains other typical peptides with a molecular weight of between 1,500 and 3,500 Da. The collagen hydrolyzate according to claim 1 or 2, wherein the collagen hydrolyzate has a hydroxyproline content of 12 wt.% Or more. A collagen hydrolyzate according to claim 1 or 2, wherein the collagen hydrolyzate is obtained by enzymatic hydrolysis of gelatin. The collagen hydrolyzate according to claim 7, wherein the collagen hydrolyzate is obtained by sequentially applying at least two endoproteases with different specificity, in particular at least two different metalloproteases and / or serine proteases. The collagen hydrolyzate of claim 8, wherein the metalloproteases and / or serine proteases are selected from enzymes from a microorganism1. Гидролизат коллагена, применяемый для улучшения здоровья кожи, волос и/или ногтей человека, отличающийся тем, что по меньшей мере 90 мас.% гидролизата коллагена имеют молекулярный в
