Citronellol
Citronellol is a very common fragrance ingredient with a rose-like odor, classified under CosIng function "perfuming." It can be naturally found in geranium oil (about 30%) and rose oil (about 25%). It is subject to Cosmetic Restrictions (III/86) and carries multiple CAS numbers depending on its isomeric form. In the UK, it is reportedly the third most frequently listed perfume on cosmetic ingredient lists.
Citronellol provides no known anti-aging or positive skin benefits; its sole established role in cosmetic formulations is to impart a pleasant rose-like scent.
Can cause allergic contact dermatitis; should be avoided by individuals with perfume allergies. In a 2001 worldwide study of 178 people with known fragrance sensitization, citronellol tested positive in 5.6% of cases. Subject to EU Cosmetic Restrictions (III/86).
