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Hair care products clean, protect, style, color, and change hair structure.

This study reported that X-ray microscopy provides more intact images of hair's internal structure compared to transmission electron microscopy, particularly for observing fine details like cuticle coarsening and cortex cracks.

In this study, human hair-carboxymethylated protein analysis showed that weathering for over 2.5 years can obscure electrophoretic patterns, while cosmetic treatments did not cause significant changes.

In this study, researchers observed that Sedum takesimense extract improved the surface properties, moisture retention, tensile strength, and wave formation of damaged hair compared to a water control, even after additional chemical and UV damage, suggesting its potential as a protective hair treatment.

This review discusses the chemical processes involved in hair styling and straightening and reports no new results; the authors highlight pregnancy safety with hair treatments during pregnancy.

In this study, researchers found that specific enzyme activities in young females' hair follicles were correlated with changes in hair shaft structure and properties, and permanent waving was associated with chemical changes that suggest hair damage.

Lightly perming scalp hair can lead to new hair growth, potentially treating baldness.

This paper reviews various aspects of hair care products, including formulations, regulations, categories, and safety, without reporting new clinical findings.

This article discusses hair care practices and hair cosmetics in managing alopecia but reports no new clinical findings; it emphasizes the importance of scalp health and good patient-physician communication.

This study found that washing hair after reduction in a permanent waving process allows for significant reformation of disulfide cross-links, enhancing the strength and elasticity of hair fibers.

In this study, applying hair conditioner during the middle of a permanent wave operation resulted in better tensile strength, hydration, and cuticle health compared to other application times.

This review discusses various hair removal methods and highlights that most research is limited to darker hair and fairer skin, suggesting a need for studies on light-colored hair; it reports no new clinical results.

A girl inherited excessive body hair from her mother and grandmother.

This article reviews surgical hair replacement techniques for bald patients dissatisfied with hairpieces and reports that various options provide good results with minimal side effects, emphasizing the importance of frontal area design for a natural appearance.

This article reviews treatments for facial hypertrichosis and hirsutism and reports no new clinical findings; the authors highlight the potential of laser and pulsed flash-light systems for permanent hair removal.

This article compares traditional nonlaser hair removal methods with newly developed laser-assisted techniques, discussing their applications but not presenting new research findings.

This article reviews existing treatments for hypertrichosis and hirsutism, noting that while eflornithine is a promising new option, the efficacy of systemic antiandrogens remains unproven in modern clinical studies.

In this study, researchers found that using 0.75% aspartic acid as an intermediate agent for a permanent wave improved wave formation and retention compared to a control in virgin hair, also reducing cuticle damage and maintaining tensile strength.

In this study, frequent use of hair straighteners/relaxers and pressing products was associated with an increased risk of ovarian cancer, with potential variation in risk by tumor type noted for permanent hair dyes.

This study highlights that improving medical professionals' knowledge of hair cosmetics can enhance patient adherence to alopecia treatments and reduce health risks from incorrect use of hair products.

This article provides an overview of treatment options for hirsutism, summarizing both pharmacologic and non-pharmacologic approaches, but reports no new clinical results.

This study evaluated an 808-nm diode laser at different fluences for permanent axillary hair removal in Korean women and found that high-fluence treatment (14 J/cm2) effectively reduced hair density and thickness, with no significant difference in comfort compared to lower fluences.

This article discusses evaluation and treatment options for a 19-year-old woman with slowly progressive hair growth and reports no new clinical findings.

This review examines changes in hair physiology and treatment options for transgender patients on hormonal therapy but reports no new clinical findings, offering treatment recommendations based on the authors' experiences.

This article reviews the causes and treatments of hirsutism, emphasizing the importance of considering ethnic and cultural norms when interpreting grading systems, and reports no new original findings.

This study found that while both professional and home-use lasers effectively reduced axillary hair, the professional Diode laser was significantly more effective, achieving 85-88% reduction compared to 46-52% with the home-use laser, which still offers some safety for users.

Laser hair removal can be effective for people with darker skin tones.

Current hair removal methods improve appearance but need more research for better options.

This report concludes that the blend method is the most effective electrolysis technique for permanent hair removal, requiring proper technique and preparation such as shaving before treatment to increase efficacy.

This review discusses existing and emerging treatments for hirsutism, highlighting new home-use laser devices, and reports no new clinical results; the authors note that permanent hair removal remains elusive.