How to Use Hair Tonic

What hair tonic actually is

Hair tonic is a liquid grooming product, usually water and alcohol with small amounts of oil, fragrance and sometimes menthol, that barbers have used for well over a century to finish a cut. It sits somewhere between a leave-in and a very light styling product. It is not a treatment for hair loss, whatever the old bottle labels suggest.

There are two broad kinds. Alcohol-based tonics feel cool, evaporate quickly and leave hair with a light, non-greasy control. Oil-based tonics, the kind often associated with slick, wet-look styles from the mid-twentieth century, stay on the hair longer and give more shine and weight.

Applying tonic step by step

Tonic works best on towel-dried hair, when there is still some moisture to help spread it evenly. On a short cut the whole process takes under a minute.

Wash or rinse your hair and towel it until it is damp, not dripping.
Shake a few drops of tonic into your palm. Start with less than you think; you can always add a little more.
Rub your palms together and run your fingers back through the hair from the front hairline to the crown.
Massage the tonic into the scalp with your fingertips using small circles for about thirty seconds. This is where the cooling, refreshed feeling comes from.
Comb the hair into place with a fine-toothed comb, setting your part if you wear one.
Let it air-dry or blow-dry on low heat. The hold firms up slightly as the tonic dries.

Which haircuts and hair types suit tonic

Tonic is at its best on short, classic cuts where you want the hair neat but still moving, and on hair that does not need much convincing to stay put. That makes it a natural match for:

A side part or a gentleman's haircut, where a comb and a light product set the part cleanly.
Short scissor cuts on fine or medium hair that clump and look greasy under heavier products.
Grey or silver hair, where a lightweight liquid keeps the colour bright instead of dulling it the way waxy products sometimes do.
A tidy morning refresh on a cut that already has a clear shape and just needs a little discipline.

When tonic is the wrong choice

Tonic will not hold a pompadour, a quiff or anything with real height. For those, pomade, clay or wax does a far better job. It also struggles with very coarse, thick or curly hair, which springs back as soon as the liquid dries.

If you want some of tonic's light feel with more control, try applying tonic first and then a small amount of cream or soft pomade on top. Our guide to using hair pomade covers the next step up in hold, and the pomade vs wax vs clay comparison helps you choose between them.

Avoiding a dry, irritated scalp

The alcohol in many tonics evaporates quickly, and it takes some of the scalp's natural oil with it. Used once a day in small amounts, most people never notice. Used heavily, or on a scalp that is already dry, it can leave tightness, flaking or itch, particularly during Ontario winters when indoor heating is already drying your skin.

If that happens, cut back to every other day, use fewer drops, or switch to a formula that lists less alcohol near the top of its ingredients. Menthol and strong fragrance can sting freshly clippered skin, so skip the tonic on the neck and around the ears on the day of a close fade. Stop using it and see a doctor or dermatologist if redness, burning or a rash develops.