Puas yog collagen ua kom tawv nqaij elastic dua?
Collagen yog ib qho tseem ceeb ntawm cov protein nyob hauv daim tawv nqaij thiab yog ib feem tseem ceeb ntawm daim tawv nqaij dermis, pab txhawb nws cov duab thiab elasticity. Raws li peb muaj hnub nyoog, kev tsim cov collagen ib txwm txo qis, ua rau cov tawv nqaij sagging, wrinkles, thiab poob ntawm firmness. Cov...
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