Collagen?is?the?main?structural?protein?in?the?extracellular?space?in?the?various?
connective?tissues?in?animals.?As?the?main?component?of?connective?tissue,?
it?is?the?most?abundant?protein?in?mammals.?making?up?from?25%?to?35%?of?the
?whole-body?protein?content.
Collagen,?in?the?form?of?elongated?fibrils,?is?mostly?found?in?fibrous?tissues?such?as?
tendons,?ligaments?and?skin.?It?is?also?abundant?in?corneas,?cartilage,?bones,
?blood?vessels,?the?gut,?intervertebral?discs?and?the?dentin?in?teeth.?In?muscle?tissue,?
it?serves?as?a?major?component?of?the?endomysium.?Collagen?constitutes?one?to?two?
percent?of?muscle?tissue,?and?accounts?for?6%?of?the?weight?of?strong,?tendinous?muscles.
?The?fibroblast?is?the?most?common?cell?that?creates?collagen.

Ascorbic?acid?is?a?naturally?occurring?organic?compound?with?antioxidant
?properties.?It?is?a?white?solid,?but?impure?samples?can?appear?yellowish.
?It?dissolves?well?in?water?to?give?mildly?acidic?solutions.?Ascorbic?acid?is?one?form?
("vitamer")?of?vitamin?C.?It?was?originally?called?L-hexuronic?acid,?but,?
when?it?was?found?to?have?vitamin?C?activity?in?animals?
("vitamin?C"?being?defined?as?a?vitamin?activity,?not?then?a?specific?substance),?
the?suggestion?was?made?to?rename?it.?The?new?name,?ascorbic?acid,
?is?derived?from?a-?(meaning?"no")?and?scorbutus?(scurvy),?the?disease?caused?
by?a?deficiency?of?vitamin?C.?Because?it?is?derived?from?glucose,?
many?non-human?animals?are?able?to?produce?it,?but?humans?require
?it?as?part?of?their?nutrition.?Other?vertebrates?which?lack?the?ability?to?produce?
ascorbic?acid?include?some?primates,?guinea?pigs,?teleost?fishes,?bats,?
and?some?birds,?all?of?which?require?it?as?a?dietary?micronutrient?

When?it?combined,?the?efficiency?is?amazing?and?skin?is?far?improved.