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Accurate quantitative bioanalysis using LC-MS/MS is challenging due to matrix effects, but using internal standards and new methods like in-sample calibration could improve results.

The device accurately estimates natural hair color at the roots in real time.

Raman micro-spectroscopy can help distinguish basal cell carcinoma from hair follicles in skin tissue.

Hair analysis can help screen for serious diseases like cancer and osteoporosis.

The conclusion is that a new method can measure caffeine and drugs in hair, finding caffeine abusers have 70 times more caffeine than normal, with a proposed cut-off value for abuse.

This method is effective for needle-free HIV-1 vaccination by activating immune responses in the skin.

Hair capacitance mapping effectively measures hair surface moisture changes.

Microfluorometry effectively measures how much polymer coats and penetrates hair, useful for evaluating hair products.

Antiseptic nanoparticle-emulsions may improve skin disinfection by targeting hair follicles.

Dopamine-modified adhesives are improving for sticking tissues underwater.

Nails could be used to check long-term drug use, but more research is needed.

Prenatal diagnosis of trichothiodystrophy is possible in the second trimester using fetal eyebrow biopsy, with sulfur content analysis being more reliable.

Estrone and 17β-estradiol levels in hair differ between males and females.

Hair analysis is promising for detecting drug misuse in livestock.

Hair test results can be misleading due to external contamination, so they shouldn't be used alone to assess long-term drug use.

Different species have unique sensory adaptations to perceive their environments.

A new method accurately measures molecular movement without complex modeling.

The method effectively measures long-term stress levels using hair samples.

Confirming low-dose endocrine toxicities is difficult and requires more research.

TheDES improve drug delivery through the skin but need more safety checks.

False high testosterone levels were corrected using a more accurate test.

Enzymatic phosphorylation of hair keratin improves the effectiveness of hair products with cationic ingredients.

A new method helps detect androgen receptor movement in cells, aiding research on hair loss treatments.

The method accurately measures hair growth with minimal risk and is better than other methods.

The hydrogel with a 1:3 ratio of hydroxyethyl cellulose to hyaluronic acid is effective for delivering drugs through the skin to treat acne.

Hair treatments and dehydration affect hair's lipid and protein behavior, influencing its flexibility and appearance.

A new sprayable hydrogel helps heal wounds faster and reduces inflammation.

A new dissolving microneedle system effectively delivers minoxidil for hair regrowth with minimal side effects.