Not always. Whether changes to the appearance of the face are permanent depends on many factors, such as age, the rate of weight loss, skin elasticity and individual physiological predispositions. In some people, the skin gradually adapts to the new facial proportions, especially if weight loss is gradual. In other cases, the loss of volume may be more noticeable and may take time or require additional support. Proper skincare, a protein-rich diet and measures to support skin regeneration are all important. If necessary, an aesthetic medicine specialist may recommend treatments to improve skin firmness and tissue quality.