noun which may take the genitive case particle 'no', noun
fragrance-free; unscented; unflavored
Commonly used on cosmetics, toiletries, and food products to indicate no added fragrance or flavoring.
This lotion is fragrance-free.
I'm looking for unscented soap.
無香料 describes a product made without any 香料, i.e. unscented or unflavored, the opposite of containing 香料.
Compound of 無 (mu, 'without') + 香料 (kōryō, 'fragrance/flavoring').