This is a great question and one I spend a considerable amount of time explaining to patients as skin quality is a major component of fantastic and lasting surgical results. It is so important that I make sure that all of my face/neck lift patients pre-treat their skin with a specific regimen, that is determined, based on their specific skin health. The health of your skin plays a vital role in its recovery following surgery and paying close attention to skin health before and after surgery is extremely important. This is because suturing into unhealthy skin could comprise your results. There is no specific definition of poor skin quality but consider it the antonym of good skin quality as defined by Dr. Zein Obagi, dermatologist. Healthy skin is defined as "skin that is naturally smooth, strong, firm, even-toned, hydrated and free of disease". To address your additional concerns regarding why poor skin quality was discussed as a reason for recurrence of skin laxity after a facelift. While this may be the case, without an in-person consultation, it is difficult to determine the cause of your recurrent loose or excess skin. First, it is important to determine whether your surgeon performed a facelift that included tightening your SMAS fascia, because skin-only facelifts are known to result in early recurrence of skin laxity. This is because this surgery both fails to fix the anatomical problem associated with facial aging, and because the skin is not meant to hold tension and ultimately stretches back out. Next it is important to rule out genetic elastin or collagen disorders. You may alternatively need volume replacement of your subcutaneous fat compartment, which can be accomplished with fat grafting. Lastly, chemical peels and lasers can adjunctively improve residual laxity, but both have their limitations. I recommend consulting with a Board Certified Plastic Surgeon, one who pays close attention to and deals with skin quality, pre and post surgery, for optimal results.