As your hands should be clean, this might not be so practical with a deodorant you want to take on the go. For that reason, Salt of The Earth's range of roll-on deodorants are definitely worth a look if you'd rather save the faff of wetting and drying your deodorant each time. Aluminium spray cans often have some plastic parts, such as nozzles and lids, that are harder to recycle, while aerosol sprays have their own environmental implications. It told us: 'Some people have questioned whether aluminium in some deodorants and antiperspirants can affect cancer risk. But the scientific evidence doesn't currently support a link, so we don't want people to worry.' None are true antiperspirants, so you will have to make your peace with a certain level of wetness.

Stone crystal deodorant can last several months. However, it has the potential to develop an odor after some time. It will be less likely to develop an odor if your underarms are free of hair. This fragrance-free vegan deodorant (or 'anti-odorant' as it calls itself) comes in the form of a tube of cream that you apply to the underarms by hand. Salt of the Earth's range has evolved into sprays, roll-ons, balms and more since it first launched the Classic Crystal – so it's no surprise that our first impressions were that this is a super no-frills product. Our Mineral Deodorant Stone revolutionized the deodorant category when it first launched in 1984... It's been a fan favorite ever since! #CrystalDeodorant #TheOriginalCRYSTALDeodorant There are sensitive formulas available. You might also wish to experiment with alternative hair-removal methods such as epilation or waxing, which might cause less irritation as they are longer lasting.Making the switch at a time when you don't have lots of high-stress work, activities or social events will take the pressure off. This product is a crystal made from potassium alum - a natural mineral salt - and sits on the surface of the skin in a microscopic layer, where it kills bacteria. Ammonium alum is another one you'll commonly find in this type of product. The deodorant is applied using your fingers, although you can also buy a small bamboo spatula (50p) to get it out of the jar. However, these particular salts only have a deodorising effect, and sit on the skin, whereas aluminium chlorohydrate and aluminium zirconium are antiperspirant ingredients that plug pores to prevent sweating.

Subscription deodorant might seem a bit unusual, but you can pause, edit or cancel the subscription at any time, and adjust deliveries or swap scents to suit you. Claims also suggest that this plugging of sweat ducts with certain aluminium compounds prevents the body ridding itself of potentially carcinogenic substances absorbed during antiperspirant use. Though the Crystal deodorant stone is famously free of aluminum chloride and aluminum chlorohydrate—synthetic chemicals that have been linked to breast cancer—its key ingredient does contain naturally-occurring aluminum that could potentially penetrate the skin when mixed with water. (Same goes for theother stone deodorant brands.) No studies have directly proventhe element in its organic state to be harmful, but it’s still caused some controversy among natural-beauty devotees. Natural moisture absorbers, such as tapioca starch, arrowroot and kaolin clay, are typical ingredients used in these products, along with antibacterial ingredients such as baking soda, citric acid and ammonium alum, which prevent odours. If you're choosing to avoid aluminium out of personal choice, bear in mind that some natural deodorants that use 'natural mineral salts' still technically contain it.

Salt of the Earth Classic Crystal Deodorant review: how much does it cost?

LONG LASTING PROTECTION - Provides long-lasting and effective protection from body-odour, keeping you feeling fresh, confident and odour free for longer. They come in a range of formats, including creams, pastes, crystals, roll-ons and pump-action spray formulas. Bottom line? We were impressed with this crystal deodorant and would definitely recommend it to anyone looking for an effective and completely natural formula.

A key fear is around aluminium in deodorants potentially causing cancer. The theory is that aluminium compounds such as aluminium chlorohydrate or aluminium zirconium, used to stop sweating, can be absorbed through the underarms and cause breast cancer.

Several brands offer this option and several also offer stronger or more gentle formulations (usually based on the amount of sodium bicarb) for different activity levels or those with more sensitive skin For centuries, natural mineral salts have been used to prevent body odour. One of these natural salts, potassium alum, is the main active ingredient in Salt of the Earth’s Unscented Natural Deodorant Spray. Potassium alum creates an invisible antibacterial layer on the skin’s surface that helps to control the growth of bacteria, preventing body odour. The result is effective, long-lasting protection that allows your skin to breathe.

Part of the allure of crystal deodorant is that you’re able to avoid the chemicals found in conventional deodorant. What they do contain is Potassium Alum, which Salt of the Earth explains is from the aluminium salt family. Does Salt of the Earth deodorant work? There are also fears that aluminium found in everyday items such as aluminium cans, antacids and antiperspirants could cause Alzheimer's. But the Alzheimer's Society says: 'No convincing relationship between amount of exposure or aluminium in the body and the development of Alzheimer's disease has been established.' Crystal deodorant is available as a stone, roll-on, or spray. Sometimes you can find it as a gel or powder. If you use a stone, it may come on its own or attached to a plastic base. One user said: 'I've used this one and found it very capable of handling odours across everyday and more strenuous activities, like running, hiking and holidays in the sun, and it lasts for an absolute age.'

Pharmacy product

Nuud says one application is effective for between three and seven days. The active ingredients include antibacterial microsilver, which neutralises bacteria. Its key ingredient does contain naturally-occurring aluminum that could potentially penetrate the skin when mixed with water.