Hello 
What its known about PWS:
Using this field a lot and very consistently for a good while, and i mean 6 months to a year or more (but at least with hope that it would get rid of the problem eventually…)
Its only on Patreon tier $4.5
https://www.patreon.com/posts/varicose-and-36387545
The Only 2 Treatments that help, and have shown total or significant changes are :
1- CO2 surgical laser system
Carboxytherapy is the infusion of CO2 to fix issues in the skin as well, just not laser but it can also help. (Already researched to confirm)
2- other different types of laser treatments, out of several and some of them actually making the issue worse, the ones that has shown to help greatly are the ones using Cryotherapy, which is the same as Cold Therapy.
Hope these help your little brother 
Just remember there is a sale going until the 2nd of January if you decide to buy them
Promo code: endofyear23
= 21%off