Buzzwords
Fragrance-free = (of toiletries or cleaning products) not containing perfume
Elsewhere on the Web
https://www.walgreens.com/q/fragrance+free+soap
http://www.prevention.com/beauty/skin-care/truth-about-fragrance-free-products
Misc
Unscented does not mean fragrance free. In fact, if you smell absolutely nothing in your skin care or beauty products, it may be even MORE harmful than you believed. Why? It sounds silly, but unscented products typically have added fragrance agents used to mask the other smells. These masking fragrances are usually composed of toxic phthalates.
https://www.seedbodycare.com/blogs/lately-ive-been-paying-more-attention/16020060-the-important-difference-between-unscented-and-fragrance-free
Planeta.com