Garlic and lip injections. Is it risky?

I don't think I would worry much about this.  Hematomas after lip injection are very rare.  I now have gone to using blunt tipped canulas for lip filler, which have greatly decreased the change of bruising and hematomas.  You might ask your injector about this technique.  In my opinion, canulas are a "game changer" for fillers. 

Thank you for asking your question. You should be able to have injections of Restylane even though you ate garlic. Make sure your injecting physician is aware of your concerns. Arnica and cold compresses can help prevent bruising. Good luck,

Garlic supplements have been shown to be a very mild blood thinner, much less so than aspirin, ibuprofen, vitamin E, or other common otc products.  Garlic present in foods would have little if any effect on bruising.  Unfortunately, the lip area is more prone to brusing than other areas generally.  Make sure to pre and post treatment apply cold compresses and to avoid oral anticoagulant products.  Potentially discuss with your physician the use of a cannula to decrease bruising (be aware that it may cause more swelling potentially).  But don't worry about avoiding Italian food prior to injections.