I've recently tried fascia blasting, I saw it on YouTube and decided to give it a go, it can help with cellulite, but it has also said to be affective on sagging skin. I couldnt afford the original fascia blaster as advertised by 'Ashley Black'
https://www.fasciablaster.com its very expensive to purchase in the UK. So I bought a cheaper version, it helps to bring blood to the surface of the skin.
I believe that having this additional blood flow, it will help to bring nutrients to the skin, helping it to tighten over time. It's not a quick, overnight cure, but part of a multiple approach, I believe it can help to tighten the skin.