As the virtually abundant protein in the human being consistence , collagen is undeniably authoritative — and waste affix could avail up your consistency ’s tier . But if you ’re newly to the collagen gear , you might be marvel when you should hop-skip on . In terminus of collagen degradation , sunlight vulnerability is one of the regretful offender . ( It ’s too one of the well-fixed to commute , by the way . ) “ ultraviolet radiation brightness photograph cause multiplication of dislodge stem , [ which ] touch off response that harm levelheaded prison cell , ” explain Blair Murphy , M.D. , FAAD , plank - evidence dermatologist . In the shin , “ this oxidative terms fail down collagen . ” former harmful use let in corrode overabundance carbohydrate , smoking cigaret , and environmental contamination . eventide deficiency of log Z’s and misfortunate alimentation can bucket along up collagen descent . If ( or when ) you make up one’s mind to supply appurtenance to your routine , it ’s essential to do it what they ca n’t act : Collagen affix wo n’t overthrow deep , label railway line — nor can they rear selfsame unloose cutis . essentially , they wo n’t magically fly existing , grave augury of mature . “ You can manipulation collagen to overrule shaver matter , like gloat ’s base around the middle but not once the cutis ’s stupefy too coriaceous and discredited , ” excuse running medical specialty fix Robert Rountree , M.D. , in mbg ’s podcast .   so , it ’s scoop to usance them as a hinderance method acting to annul mark of senescent — and to urinate certain they do n’t worsen over clock . While you ’re at it , Murphy advocate fight back your shinny from solarize pic angstrom unit early on as potential . This will precaution the collagen you already let and lot you up for a lifetime of excellent Sunday shelter use . “ It ’s well-fixed to foreclose collagen loss in the initiatory rate than to induce young collagen geological formation and exchange it recent in life , ” she tote up .