Got natural keratin complex smoothing hair treatment. no formaldehyde but aledehyde? was this a mistake? safety?? they said it's safe but....

Unclear question: What ever you bought is unlikely to make any difference to your hair. Wish you good health! - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex, if you have sex.