How to Tighten Loose Breast Skin Without Surgery?

I'm not aware of any great ways of tightening breast skin without surgery. Some folks believe that Thermage may help, but I have not felt these results to be consistent or acceptable in most cases.
In my opinion, surgery is the best choice for consistent, natural results. Options include breast augmentation, breast lift, or a combination of the two. My advice would be to seek a Board Certified Plastic Surgeon in your area, and he will be able to review your options with you in detail after a good exam and discussion of your goals.

Morpheus 8 is a non-invasive skin and soft tissue tightening treatment that is consistently amazing in our patients. We use the Morpheus to exact fractional induced RF into the skin or tissue in order to tighten collagen and stimulate contraction of the tissue. For acne scars, it is quite useful to build collagen in patients who have atrophic scars but is not very productive for ice-pick scars which require TCA Cross. For tissue tightening, Morpheus is ideal for the face and neck and we often combine it with CO2 laser or Ultherapy to further enhance results. Chemical peels and skin resurfacing should be done at least 5 to 7 days after, but can be performed earlier, depending on treatment severity. Avoid exfoliating skin treatments before Morpheus and expect a period of 2-4 weeks for skin contraction to set in.

Best,
Dr. Karamanoukian
Realself100 Surgeon

I agree with the answers given below. While I am seeing some encouraging results (early so far) with non-surgical radiofrequency skin tightening for the breasts, massive weight loss usually results is such dramatic loss of skin elasticity and loss of firmness to the breast tissue itself (gland and fatty tissue inside the breasts), that radiofrequency treatments will be useless to treat this.Surgery is usually the best way to approach this, and for massive weight loss in particular, most commonly I prefer what is called a "dermal suspension and parechymal reshaping" procedure, as first described by Peter Rubin. In these cases, there is no way around surgery and you must accept the scars, but when combined with mesh for internal support of the breast tissue, I find the results to be excellent.