Colour-change dressing layer that flags pH shifts in diabetic foot wounds
TL;DR Huedress is a thin, battery-free dressing layer that changes colour when a chronic wound's pH moves into a range linked with trouble. Nurses and patients see it without lifting the dressing. Diabetic foot clinics and wound-care distributors buy it, and it prompts a clinic visit rather than diagnosing infection.
India had about 89.8 million adults with diabetes in 2024, with other estimates above 101 million[1]. A 2026 global meta-analysis put active foot ulcers at 54.57 per 1,000 people with diabetes, foot infection at 39.17 per 1,000 and past amputation at 14.75 per 1,000[2]. Indian studies in that review found active ulcers in 4.5–4.8% of patients they examined[2].
Many patients dress wounds at home between clinic visits. Infection gets spotted late, when the redness or smell is already obvious, and each extra week raises the risk of losing a toe or a foot.
What it does, in regulatory terms: a monitoring aid on a medical device. Huedress does not diagnose infection or treat it. A colour change means "get the wound checked". It is a medical device under the Medical Devices Rules 2017, and the exact class must be confirmed with CDSCO before launch[3].
The product is a pH-sensitive layer, using an established indicator dye fixed into a gel or fabric, that sits under a transparent top film. A printed colour card lets a nurse, carer or patient read it, and a phone photo can be sent to the clinic.
We reframed the seed, which pitched a smart bandage with sensors. A 2026 scoping review of 179 smart-dressing sources found only three that applied a dressing to human wounds and none that were randomised[4]. Electronics in a wet wound add cost and failure points, and I don't see the point of a sensor nobody has tested on patients. A passive colour layer is cheaper, easier to test and still answers the main question.
The wearer is usually an older person with diabetes. The buyers are diabetic foot and wound clinics, hospital wound-care teams and dressing distributors that supply home-care nurses. If the colour change cuts missed infections or saves clinic visits then they'll pay per dressing, at a premium over plain ones. There's no Indian price point yet for indicator dressings, so you'll have to test the price.
Since October 2023 every class of medical device in India needs a licence[3], which raises the bar for casual imports and favours a local maker that is compliant from day one. Research output on colour-change dressings grew sharply, with a 2026 review listing a dozen lab designs based on plant dyes and pH indicators[5].
There's no public figure for an Indian smart-dressing or indicator-dressing market. The bottom-up signal is the size of the at-risk group - tens of millions of people with diabetes[1], and roughly five in every hundred with an active foot ulcer[2]. Even a small share of wound-clinic patients using a premium dressing is a real business.
A French startup is developing graphene smart dressings for chronic wound monitoring, though its site does not state a commercial stage[6]. Most colour-change designs remain in university labs[5]. We found no Indian company selling an indicator dressing, though web search was limited during research. The gap is a simple, licensed, low-cost product sold through Indian foot clinics.
| Difficulty | Hard (59/100) |
| Starting capital | ₹1.5–2.8 Cr |
| Time to launch | 18–30 months |
The chemistry is known. The hard parts are a dye that stays put and stays safe on broken skin, a clinical study showing the colour change matches what clinicians find, and a device licence. Then you need clinics to change a dressing habit, which is harder than any of the chemistry.
Yes. This is a medical device, so you need CDSCO approval before you sell.
Building this outside India? The categories above usually have a local equivalent, so check with your own regulator.
Don't let AI diagnose an infection from a photo. Huedress is a monitoring aid, and a colour change only means "get the wound checked".
Want to work out the AI layer for Huedress? Talk to Yash →
Here's what can go south -
I think a careful founder with wound-care or medical-device experience could build this. If you want to ship a gadget fast then it's the wrong idea. First prove, in a small clinic study, that the colour change agrees with clinicians' calls on most wounds.
Plan for roughly ₹1.5–2.8 Cr for dye development, a clinical study, the device licence and first production.
Yes. It is a medical device under the Medical Devices Rules 2017, and its class must be confirmed with CDSCO before launch.
Yes, diabetic wounds are a global problem. Expect a medical device approval path with your local regulator and keep claims to monitoring, not diagnosis.
The free Huedress validation kit has the line-by-line capital breakdown, the effort scoring, the device-licence checklist, a 14-day validation sprint with pass/fail targets, a 90-day launch plan, 10 interview questions for clinicians and distributors, and 5 assumptions to test. Download the kit →
Thinking about building Huedress or something close to it? The make-or-break work is a clinic study that ties the colour change to what clinicians see, and that's where I can help you plan. If you need a hand, you know where to find me. Talk to Yash →
For illustration only. Names are fictional and ideas hypothetical; sourced facts are real but may be out of date. Nothing here is legal, financial or professional advice, and Yash Khatri is not personally liable for any use of it. Read the full disclaimer.