Journalist and blogger Manu Carvalho has written about the effects of non - invasive skin dye Silhouette Soft , after her mother tried it out . Carvalho wrote that the threads , made of polylactic acid , are sewn deep into the skin , where they stimulate collagen synthesis , plumping out flesh and strengthening the skin , before slowly relaxing . The effects , Carvalho wrote , last for around two weeks .
Journalist and blogger Manu Carvalho has written about the effects of non-invasive facelift treatment Silhouette Soft, after her mother tried it out. Carvalho said that the threads, made of polylactic acid, are sewn deep into the skin, where they stimulate collagen growth, plumping out flesh and lifting the skin, before slowly dissolving. The effects, Carvalho wrote, last for around two years.