Ingredient safety Is our number one priority; ingredients are carefully selected to meet strict guidelines set by the European Union. Every single ingredient has been approved for safe use by an expert scientific panel. Science and nature play a vital role in creating NAK Products. This essential balance ensures we can create beautiful products of the highest standard, that respect the delicate nature of hair and skin. NATURAL VEGAN COMPLEX. AGAINST ANIMAL TESTING. SULPHATE FREE – PARABEN FREE. GREEN LIVING.