It’s got the versatility of synthetic fillers such as Restylane and the recently FDA-approved Juvederm, but AquaMid may be an even better way to spackle smile lines, fatten lips, erase creases, and augment cheekbones and chins. Here’s why: It’s permanent, and it’s reversible. The hitch: FDA approval is probably several years away. Made in Denmark, AquaMid is a gel-like plumper that has been available in Europe and Middle East since 2001. Says Randal Haworth, a Beverly Hills plastic surgeon who has used AquaMid overseas, “It’s smooth and easy to inject, and if a patient wants to modify the results, her doctor can just stick a needle in and pop the implant like a zit.”