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A: Yes, this hair serum is free from harsh chemicals and safe for color-treated or chemically-treated hair

When working with a Lambda 25 spectrophotometer (PerkinElmer, USA), it is recommended to use a microcuvette with an optical path length of 1 cm and concave side walls (with a distance of 0.45 cm between them), or in the case of a conventional cuvette, to proportionally increase the volumes of all reagents (e.g., by 2 times)

Dose ranges are often species- and model-dependent, with rodent studies using body-weight-normalized doses (mcg/kg or mg/kg) that may be substantially different from the fixed doses used in primate or pharmacokinetic models

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