The answer will make you frown (another expression that creates age lines)
Smiling can cause grooves in your skin, particularly the nasolabial folds that appear when you smile. As you age, these grooves may not fade away due to a decrease in skin elasticity. Factors such as genetics, melanin concentrations, and oil production can affect how quickly these grooves appear. The main cause of wrinkles is ultraviolet radiation exposure from the sun, so it is important to protect your skin with sunscreen and keep it hydrated. Using retinol-based creams can promote new skin cell formation and collagen production, improving the appearance of wrinkles. While limiting smiles may reduce the grooves, it is not recommended as smiling has immune system-boosting and stress-reducing benefits.