Experts assure us that Botox is safe, but that's what they said about silicone breast implants and then, later, soya. Perhaps that's why cosmetic surgeons wear those little green masks so that if anything goes wrong, they won't be recognised.
Apart from exercise, diet and good tailoring, without doubt the best way to stay youthful is to feel that way. Or, take the Joan Collins route and feel a youth. Joan's hubby, Percy, is 30 years younger, and when asked if she considered the age difference a serious concern, she replied with a sassy shrug: "If he dies, he dies."