Pro Plenish is formulated using low molecular weight Kiara Collagen Serum hydrolysed Marine Collagen, making it easier for the body to absorb and digest. It has practically no undesired side effects, nor does it react with other things you may intake. Not recommended for people with fish allergies or pregnant women. Collagen is nothing new; it is the most frequently occurring protein in humans and is the most important building block for the skin, tendons, bone, cartilage, and all other connective tissues. It is vital for maintaining skin, hair, nails, muscles and bones. http://drozforskolin.org/kiara-collagen-serum/