What is the difference between a deodorant and an antiperspirant?

A deodorant reduces sweat odour by inhibiting the bacteria that cause it and masking body odour with fragrances. However, it does not alter sweat production itself.

An antiperspirant such as Sweat-Off works differently: it targets sweat production and prevents it by constricting the sweat glands with the aluminium salts it contains. This prevents sweat from escaping, which removes the breeding ground for odour-causing bacteria and thus effectively prevents odours.

The application also differs:

Deodorants are usually applied in the morning after showering. They usually need to be reapplied several times throughout the day to maintain their effectiveness.

An antiperspirant, on the other hand, is applied in the evening. Once perspiration has stopped, it only needs to be reapplied when perspiration starts again.

For different areas of the body:

While deodorants are primarily intended for use on the underarms, antiperspirants can often be used on other parts of the body, such as the forehead, chest, back or feet.