Tallow deodorant can work for some individuals due to its fat content helping to absorb odor molecules. Effectiveness varies depending on individual body chemistry and the specific formulation of the deodorant, which may include other odor-fighting ingredients.

Tallow can be beneficial for armpits due to its moisturizing and skin-conditioning properties. It may help soothe irritation and dryness, but patch testing is recommended to ensure no allergic reaction occurs.

Drawbacks of tallow include potential for staining clothes due to its fat content and a possible greasy feel. Additionally, some individuals may experience allergic reactions or find the scent of tallow unpleasant.

The healthiest deodorant often depends on individual needs and sensitivities, but generally, look for options with minimal ingredients and free of aluminum, parabens, and artificial fragrances. Natural deodorants with ingredients like baking soda, arrowroot powder, or essential oils are popular choices, but patch testing is always recommended.