| 摘要 |
A method and composition are disclosed with which it becomes possible to reduce the perception of ammonia odor in ammonia-containing compositions such as hair bleaches and colorants. A perfume composition containing at least one perfume material which is olfactively stable in the ammonia base and satisfies one of the following criteria is added to the ammonia-containing composition:(1) contains a phenyl ring moiety and has an air diffusion coefficient of >5.7,(2) contains a C-5 ring moiety, which also contains at least 1 carbon which is sp2 hybridized, and has an air diffusion coefficient of >4.4.
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