So you've had a procedure that ended with a scar. Its healed and now you're good to go right? Almost, but not quite.
The purpose of a scar is to hold things together. Great, that's exactly what we want, when we've been cut/torn the goal is to stick the edges back together. The thing about scars is they don't ever stop holding things together. Like tree roots they just keep growing, they don't care what they attach too or grow around. The fibres are relatively sticky and binding. Scars will stick the incision edges together and then the surrounding fascias, the organs and other structures too. Over time scars can create pulls and restrictions to proper movement. This is especially key when a scar starts to pull a non-weight bearing structure into a position that causes pressure on it. Example, Caesarean or heart surgery scars.
Having these scars treated and gently unwound as well as self treating is key to freeing the fascias and structures up.
Castor oil has a unique ability to soften scar tissue below the skin surface, allowing the scar to slide and behave like the surrounding tissues. Cover the scar with oil, cover with plastic and a heat source. The plastic protects materials from the oil and ensures better absorption, a hot water bottle is ideal as a heat source. Leave this on for 15-30 minutes and repeat daily. You don't need to rub it in, just let it absorb.