I am a 50 YOF, looking for firming/rejuvenation of the lower face. I have had Restylane/ Juvederm with great results. New doctor is suggesting World Dermic's H100 worlddermic.net as less expensive/longer lasting alternative: 100 mg Hyaluronic acid (sodium salt form) 5% mannitol, DMAE, Pro-collagen peptide, silicium, Vitamins, Minerals, Aminoacids. I believe the product is traditionally injected (friend had it) and not with the use of a dermapen. Experiences/opinions greatly appreciated.