Myth but use if help
Many of my patients swear by the benefits of tea tree or bio-oil and so i generally don't dissuade them but there is very little science to support its use.
It is probably the massage
, (which we know helps scars) that is used to apply the oil, which is actually providing the improvements observed. Massage with any clean oil 3-4 times a day. Silicon gel trips are morel likely to improve the scar.