Q&A: What’s the purpose of ingredients like linalool or limonene in products?

In the October Q&A, Charlette asked: Just wondering what is the purpose of the following ingredients which are often listed at the end for many lotions/creams/facial products: LINALOOL LIMONENE BENZYL ALCOHOL BENZYL SALICYLATE Also: Farnesol, Geraniol and Hexyl Cinnamal, … Do these add anything besides a little fragrance? Can these be ignored? Sarah responded: They are the…