The Phitku Alum Roll-On offers a unique, fragrance-free approach to odour control using potassium alum. I ditched my regular deodorant for Phitku’s 100% alum roll-on for 10 days, putting its fragrance-free odour-control claims to the test. Here’s my verdict.When I think of roll-on deodorants, the first thing that comes to mind is fragrance and the long list of ingredients that often go into them. But what if I told you there is a deodorant made primarily with potassium alum, or ‘phitkari’, a familiar ingredient in Indian households? With no added fragrance and a rather no-fuss approach, Phitku’s 100% Alum Roll-On claims to offer up to 24-hour odour control.I decided to put it to the test, using the roll-on consistently for 10 days to see whether this minimalist approach to deodorising actually works. (Also read: Tried and tested: Can this SPF 50 sunscreen survive Dubai’s scorching 40°C summer? Here's how it performed )My first impressionThe first thing I noticed was how different it felt from a typical deodorant. There is no strong fragrance, just a clean, almost neutral application. The roll-on glides smoothly over the skin and doesn't leave behind the sticky feeling that some deodorants can.I applied it to clean, slightly damp underarms as instructed, rolling it on for a few seconds before letting the area dry. The application was quick and mess-free, and I could get dressed without feeling like I had a layer of product sitting on my skin.I also liked using it before heading to the gym. Even after a sweaty workout, I didn't have to deal with the combination of sweat and a strong artificial fragrance that can sometimes be more unpleasant than the original odour.Phitku’s roll-on harnesses potassium alum for effective odour control without added fragrances. (Phitku)Does it actually control odour?The biggest question, of course, was whether a fragrance-free alum roll-on could actually keep me feeling fresh.Phitku works differently from a conventional deodorant. Potassium alum is intended to help control odour-causing bacteria rather than simply cover the smell with fragrance. It is not an antiperspirant, so it doesn't stop natural sweating, which is important to remember if sweat reduction is your priority.For me, the biggest appeal was being able to use it during gym days as well as while navigating Dubai's hot, dry summer weather without feeling like I was layering on a heavy product.The brand also claims that alum can help improve the appearance of uneven underarm skin over time. While I wouldn't expect an instant brightening effect, it is an interesting added benefit for anyone concerned about underarm pigmentation.The verdictIf you are looking for a fragrance-free, lightweight option for everyday odour control, Phitku’s 100% Alum Roll-On is an interesting alternative to conventional deodorants. I particularly liked that I could use it before a workout, during hot weather and alongside my perfume without the scents competing.However, if you want to reduce sweating or prefer a deodorant with a noticeable fragrance, this may not be the right fit.For me, the biggest takeaway was simple: staying fresh doesn't necessarily mean smelling like a deodorant all day. Sometimes, less really is more.The 100g Phitku Alum Infused Crystal Roll-On Stick is available for ₹699 on Phitku’s official website.Disclaimer: The product featured in this article was sent to Hindustan Times by the brand for review purposes.Akanksha Agnihotri is a lifestyle journalist with over 3 years of experience. She is a psychology graduate and holds a postgraduate diploma in Radio and Television Journalism from the Indian Institute of Mass Communication, Delhi, where she graduated as a gold medalist. Originally from Bhopal, the beautiful capital of Madhya Pradesh, she draws inspiration from the city’s rich cultural heritage and layered storytelling traditions that subtly shape her narrative voice.