Evivo's website is very easy to use and has the literature/evidence clearly laid out. Although the product is fairly pricey, shipping and handling are included and our product arrived within 2 days of ordering! In using the product, it is a bit fiddly mixing and dispensing using the syringe but my baby girl got the hang of it by the end of the first week and we noticed an improvement in her skin clearing up on her face and a decrease in fussiness/straining to pass gas or have bowel movements. Happy baby and very happy family!