FACE APPLICATION For in-cabin treatments, 12% glycolic acid. It is essential to cleanse the face with cleansing milk and toner. Apply glycolic acid with a brush to avoid hand sensitization. The product should be applied to the most affected areas, carefully avoiding the eye contour: it should be left on for 2 or 3 minutes. As soon as the client feels a burning sensation or a certain redness is noticed, the acid must be removed with the buffer solution (it inhibits the action of the acid itself) or rinsed thoroughly with water. Glycolic acid treatments do not replace but complement other aesthetic treatments, so after removing it, we will apply soothing or nourishing creams, particularly from the Vita E or Calendula lines, avoiding stimulation with electrical devices. For home maintenance, the use of the AHA Line is recommended. The use of glycolic acid is NOT RECOMMENDED for sensitive and allergic skin. In-institute treatments should be carried out once or twice a week on oily or thick skin, while on normal skin, one or two bi-weekly sessions. A preliminary skin test should be performed behind the ear, checking for possible allergic reactions within the subsequent 48 hours. It is used like a liquid, but can be applied to larger areas. They should be removed with the Buffer Solution as soon as a burning sensation is felt.