The solutions for a safe and effective keratin hair treatment are simple and easy to follow. They include: – Choosing a reputable salon and stylist – Asking for a patch test before the treatment – Checking the ingredients of the product used – Using sulphate-free shampoo and conditioner after the treatment – Avoiding chlorine and salt water for at least two weeks after the treatment By choosing a reputable salon and stylist, you can ensure that they have the proper training and experience to perform the treatment safely and correctly. You can also ask for a patch test before the treatment to see if you have any allergic reactions or sensitivity to the product used. You should also check the ingredients of the product used, as some may contain formaldehyde or other chemicals that can be harmful if inhaled or absorbed by the skin. Formaldehyde is what actually makes the hair look straighter, but it can cause eye irritation, nosebleeds, headaches, and respiratory problems. It is also a known carcinogen. Some alternatives to formaldehyde are glyoxylic acid or carbocysteine, but they may not be as effective or long-lasting. After the treatment, you should use sulphate-free shampoo and conditioner to preserve the results and avoid stripping away the keratin from your hair. You should also avoid chlorine and salt water for at least two weeks after the treatment, as they can damage or fade your hair colour.