Liposuction remains effective in older individuals in that it continue to successfully remove fatty tissue. However, contour is related to the amount of excess skin and fat and the most effective treatment depends on their relative proportions. Individuals with minimal excess skin, and skin that is able to retract and conform to recontouring are better candidates for liposuction, As you age, the skin can become looser and may not conform/retract as well due to changes in its collagen. For this reason, treatments that remove fat only, like liposuction, may be less effective. But without being evaluated, it is impossible to put a blanket statement on this. Each case is different and certainly many people in their 60s can benefit from liposuction. Evaluation by a board-certified plastic surgeon should be your next step to explore this possibility.