My all time favorites are:
HYALURONIC ACID SUPPLEMENTS
LUSCIOUS LIPS PUMP
CITY LIPS
PARTHENA LIP PLUMPER (to my utter dismay doesn't exist anymore)
Sally Hansen's THIN LIP COLLAGEN BOOST
LIPS 2 KISS SYSTEM
as always, I will keep trying. Until I get to the actual reviews, here is a small database of lip plumping links: If there is an asterisk*, I have tried it.
City Lips*
Lamas Lip Enhancer
Lipfusion*
Sovage
Perfect Lip*
Lip Exercises-page coming soon!
Modelle Lip Plumper*
Hydroderm Lip Enhancer
Lips 2 Kiss
Cushy Lips
Sensual Lips
Dream Lips*
Lip Solution by Dermafresh/Simon Solution
Lip Formulush
Perfect Pout-Skin Doctors
Celazome Lip Treat
Celebrity Sexy Pout
Lip Factors
First Impression by Hydroderm
SKINN Lip 3x Volumizing Serum
Sally Hansen Thin Lip Collagen Boost*
Sally Hansen Volumizing Lip Shield*
Sally Hansen PM Lip Plumper
Lip Pulse
Lex Lips
Sexy Mother Pucker*
Gale Hayman's Lip Lift
Gatineau's Beautifying Lip Care
Lucky Lips
Kaplan MD Lips 20*
Crystal Peel Lip Lift
Lip Explosion
Lip Venom - DuWop*
Voliptuous Lip Plump
TheBalm - Plump your Pucker*
Z. Bigatti Lip Pout
Victoria's Secret Very Voluptuous*
Avon Anew Clinical Plump & Smooth Lip System*
Boots Time Dimensions Instant Lip Plumper*