What causes smile lines?

Related questions

1. How often should you smile?
2. Can dogs tell when you're smiling?
3. How does Smiling change your brain?
4. Can smiling make you feel happier?
5. Does smiling make you look older?
6. Why your smile is beautiful?
7. What is a smile?
8. Does moving your face cause wrinkles?
9. What is a real smile called?
10. What does it mean when someone smiles a lot?

Tags

1. #simple
2. #facial
3. #genetics
4. #movements
5. #other
6. #tobacco
7. #expression
8. #laughing
9. #appearance
10. #exposure
11. #aging
12. #lines
13. #including
14. #caused
15. #reduce
16. #smoking
17. #potential
18. #include
19. #causes
20. #commonly
21. #frowning
22. #smiling
23. #repetition
24. #exercises
25. #laugh