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The peak is broad, so the measurement is not very sensitive to wavelength miscalibration of the spectrophotometer, and error due to miscalibration can be avoided by taking the value at the maximum instead of strictly using 330 nm

The copper ion acts as a cross-linker between peptide molecules when thermal motion is high enough to break the original coordination sphere

Its lightweight formula absorbs quickly, leaving skin hydrated and radiant

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Understanding the Mechanisms of Skin Tightening Skin tightening involves enhancing the production of collagen and elastin, the proteins responsible for maintaining the skin's structure and elasticity