How to use underarm roll on

Check whether it controls sweat or odor

Deodorant reduces or masks odor, but does not prevent sweating. Antiperspirant reduces sweat, and some products combine both functions. Choose deodorant if odor is the main concern, or antiperspirant if you want less underarm wetness. Roll on describes the format, not the function, because apparently even an armpit bottle needs its job description checked.13

How to apply it

1. 1Wash your underarms. Daily bathing or showering helps control the bacteria responsible for body odor.
2. 2Dry your underarms completely. Applying antiperspirant to dry skin reduces the likelihood of irritation.
3. 3Apply the roll on to each underarm, following the bottle's directions for the amount and frequency.
4. 4Let antiperspirant dry completely before going to bed. Do not apply it immediately after shaving if the skin is already irritated.

Should you use it at night or in the morning?

Many antiperspirants work best when applied at night, when sweating is lower. This lets the product remain in place for six to eight hours before washing in the morning. A separate deodorant can then be applied for odor control. If your antiperspirant is prescribed, follow your dermatologist's schedule, including any morning application, rather than borrowing another product's routine.13

How often should you apply it?

Everyday deodorants and antiperspirants can be used daily, following their directions. Antiperspirant treatment for excessive sweating has a different schedule: bedtime use continues until sweating is controlled, usually within a few weeks. Maintenance is often once or twice a week. That treatment schedule is not a universal instruction for every roll on. Nonprescription antiperspirants treat mild excessive sweating; heavier sweating can need prescription treatment.12

Keep wearing clean clothes and washing your underarms regularly. Body odor develops when skin bacteria break down substances in sweat. Deodorant masks odor, but does not replace washing, even if the fragrance has a more elaborate name than your shower routine.4

What if it irritates your underarms?

Both deodorants and antiperspirants can irritate skin, especially products containing perfume or dyes. For sensitive skin, check the ingredient list rather than choosing by scent. If a product causes a rash or irritation, change the deodorant. See a doctor if inflammation or itching persists. Tell your dermatologist about irritation or discoloration during antiperspirant treatment; spacing applications further apart or changing the formulation can help.125

What is an underarm whitening roll on?

If you mean a roll on marketed to lighten dark underarms, that is a different goal from controlling sweat or odor. There is no standard treatment for underarm darkening. Some topical treatments help: 4% niacinamide improved pigmentation compared with placebo in a small trial lasting nine weeks. That does not give every whitening roll on the same results or timetable. Irritation from shaving, friction and underarm products can contribute to darkening, so using fewer products can help. Get thick, velvety darkening checked by a doctor because it can be associated with diabetes.56

When is roll on not enough?

Ask a pharmacist about stronger antiperspirants if ordinary products are not helping. See a doctor if sweating disrupts daily activities, happens at night, occurs at least weekly or has lasted six months. Also seek advice if sweating suddenly increases, body odor changes significantly, or you take medicine for another condition. Excessive sweating can be caused by medication or another health condition.47