PDMS is just a commonly used polymer.
http://www.galco.com/buy/Dow-Cornin...TCDjjKz6vulidxgOXY-KtIwTcmnqukd0aAqzREALw_wcB
Here, buy it yourself if you are dying to try it, because it is just ubiquitous and non toxic. PDMS is just a type of silicone - yes, similar to caulking agents and bodily implants.
You know what the scientists "used" it for? To cast (more like cross link but this is unimportant) the PDMS into molds of what I presume are a grid of wells, to HOLD and culture the hair follicle cells into self assembled primordia units,
en masse. PDMS is basically a non toxic rubber material, and in this case it was sufficiently oxygen permeable, which was integral to this work.
But the article linking french fry ingredients and baldness is one of the most ignorant, out-of-context, missing-the-point, piece-of-sh*t things I have ever had the displeasure of reading. Please never post anything like that again, on this forum or otherwise.
In a new story, reporters have found that the same ingredient used to make common plastic food containers - polypropylene, ubiquitous though it may be - was also used to fabricate the dashboard panels of the new Tesla Model 3. Could food containers hold the key for going green? More at 11.
Edit: Since this article is getting a lot of hype for some reason, I'll mention that using PDMS to make a substrate is a common technique. Here is the set up of a lab mate of mine, who uses a machined aluminum master as the template for PDMS mini wells, in which he runs multiple organic reactions.
Edit 2: Here it is, folks. Straight from the paper.
Source:
http://sci-hub.tw/https://doi.org/10.1016/j.biomaterials.2017.10.056