Collagens are the coiled chains of amino acid that make up the dermis.
There are currently 27 known types of collagen in the body. However estheticians only need to concern themselves with Collagens I, III, IV and VII – that make up the papillary and reticular dermis the Extracellular Matrix (ECM). Collagens responsible for keeping skin flexible and firm. One educator I studied under suggested we should think of them as coiled springs on a mattress.
Types of Collagens:
Collagen I – found in the Papillary Dermis
Collagen III – found in the Papillary Dermis
Collagen IV – in the Epidermal-Dermal Junction
Collagen VII – in the Epidermal-Dermal Junction
Elastin – fibers found in abundance in the Reticular Dermis; gives skin its tensile strength and definition.
There are several factors involved in collagen synthesis. Take a look at this video for a quick lesson. NOTE: This video is intended for professional skin therapists so it might be boring to you laymen and women.