Hair cosmetics include hair tonics, oils, conditioners, removers, dyes, and shaving preparations. Hair conditioners improve hair texture and damage. They contain moisturizers, reconstructors, detanglers, and other ingredients. Hair removers work chemically or mechanically to degrade or remove hairs. Depilatories contain ingredients like sulphides or thioglycolates that break hair bonds. Shaving preparations soften beards and lubricate skin before shaving and cool and refresh skin after. Hair dyes use ingredients like dyes, alkalizers, and antioxidants to temporarily, semi-permanently, or permanently color hair. Formulations are evaluated for