A woman who hasn’t used deodorant in two years has revealed the simple trick she uses to prevent body odour.

Marina Dean-Francis, 35, from the UK, has been using a skincare product in lieu of deodorant – and claims it completely eradicates body odour, as well as brightening her underarms.

The trick is to simply apply a glycolic toner – typically used on the face – to the armpits.

Marina says the glycolic acid lowers the pH level of the skin, preventing odour-causing bacteria from replicating.

“I heard that glycolic acid can be used for elbows and knees and told my mum about it, and she said ‘have you tried it on your underarms’,” Marina, a fashion and beauty photographer, told Jam Press.

“It doesn’t prevent sweating but removes the odour – so it might not be the best solution for people who sweat excessively as the sweat will gradually dilute glycolic acid and raise the pH levels again so the bacteria will start doing its thing.

“It worked great [for me] – no odour and I didn’t need a deodorant.

“That was two years ago and neither of us has used a deodorant since. I use it either daily or sometimes every other day.

“I’m very happy with the results – and my underarm area looks much lighter and brighter.

The skincare buff wets a cotton pad with water before adding the toner and applying to her underarms.

Her preferred brand is The Ordinary Glycolic Acid 7% Toning Solution, which costs £6.80.

Marina shared a clip of her applying the toner on TikTok, where her post was viewed 839,000 times and racked up 31,000 likes.

One person commented: “I started doing everyday. Now I just have to do it twice a week. I don’t use deodorant unless I know I’m going out and be sweaty. This works.”

“This is literally the best tip I’ve learned from TikTok. Over 6 months from using this and works miraculously,” another user said.

Someone else added: “I do it every two days now and literally have no smell anymore.”

Other users called the trick a “game changer” and a “super hack”.

“I spray it on. Works great!!” another person commented.

One user said: “It worked, it’s been two years now I don’t use deodorant anymore.”

“Running to try it out,” said another fan.

Someone else said: “I did this two months ago and haven’t worn deodorant since and they don’t smell.”

Marina recommends doing a patch test first to make sure the skin doesn’t react badly to the product, as well as starting by using the toner just twice a week, diluting it with water and ceasing use if the skin becomes sensitive.