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This study found that keratin fibers like human hair undergo thermal and mechanical transitions that can help assess changes from cosmetic processes such as bleaching and perm-waving.

This review outlines the current regulatory framework for cosmetics under the FD&C Act, highlighting that they are less strictly regulated than drugs, but notes potential future changes due to proposed legislations requiring stronger safety measures.

This chapter reviews the anatomy and structure of hair, discusses hair damage and analyses, and explores methods for processing hair changes, but presents no new research findings.

This study found that modern styling cosmetics can significantly alter hair structure through changes in interfacial chemistry and cohesion, particularly when applied to already damaged hair.

This study explores torsional measurements of single hair fibers to differentiate the effects of cosmetic treatments on hair structure, highlighting their potential to reveal shear stiffness changes related to cuticle damage.

The document concludes that individualized treatments for hair issues are effective, certain hair changes can indicate neurocutaneous diseases, specific lotions improve skin health, laser hair removal works but needs more study on long-term effects, men's cosmetics are diverse, peeling is effective but can have side effects, and facial pigmentation is often due to overactive skin cells.

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

This article discusses the psychological impact of skin imperfections and suggests establishing a Cosmetic Dermatology Service within public health systems to address these issues ethically.

In this study, researchers found that chemical treatments like bleaching can cause severe damage to the hair cuticle, with previously modified hair showing complete deterioration compared to the partial degradation seen in virgin hair, highlighting the need for mindful cosmetic practices.

This review analyzes the mnemonic MY PCOS, exploring diagnosis and treatment strategies for the metabolic, cosmetic, and reproductive complications of polycystic ovary syndrome, without reporting new clinical findings.

In this randomized double-blind study, 160 adults with alopecia areata showed significant improvements in hair loss severity after using a bioactive peptide cosmetic product that mimics platelet-rich plasma, while the placebo group showed no significant change, underlining the treatment's potential effectiveness.

This review describes the surgical and nonsurgical genital rejuvenation options for addressing hair, morphology, and vascular changes, noting increased interest but providing no new clinical findings.

In this study, Brazilian postmenopausal women reported that menopause significantly deteriorates the quality of their skin, nails, and hair, negatively affecting self-esteem and quality of life, with a need for better understanding of hormone replacement therapy's dermatological effects.

This review discusses the cosmetic use and safety of Hypericum Perforatum Extract and Oil, finding that current data are insufficient to support their safety in formulations due to a lack of comprehensive testing.

This study found that laser-based goniophotometry can effectively monitor changes in hair surface reflection related to color and cuticle cell tilt across different ethnic origins.

This paper reviews cosmetic active substances for treating pregnancy-related skin changes like hyperpigmentation and striae, discussing their efficacy and safety but reports no new clinical results.

In this literature review, the authors explored the physiological characteristics and age-related changes of the human lip vermilion, highlighting its unique structure and how these insights can aid future development of lip care products.

This article discusses qualifications and study requirements for board certification and subcertification in cosmetic surgery, and reports no new results.

This review examines intrinsic and extrinsic aging impacts and presents evidence-based lifestyle recommendations to complement cosmetic procedures for enhanced antiaging outcomes, but it reports no new clinical results.

This review addresses various gender-specific challenges in managing women with epilepsy, such as AED-related cosmetic concerns and hormonal impacts on seizure frequency, but it reports no new clinical findings.

This review highlights essential preoperative assessments for ophthalmologists and non-oculo-facial surgeons performing upper facial rejuvenation, emphasizing the importance of understanding ocular and periocular anatomy to achieve both cosmetic and functional improvements.

In this study, PTH-CBD effectively prevented and partially reversed chemotherapy-induced alopecia in mice, with pretreatment offering a better cosmetic outcome compared to therapeutic administration after hair loss onset.

This study found that daily topical application of citral increased sebaceous gland lobules and cell hyperplasia in male rats after three months.

This study found that the moisture sorption and desorption process can differentiate between cosmetic treatments of hair and provide insights into hair fibre structure changes, with bleaching causing greater symmetry breaking than perming.

This study found that 7.9% of dermatological outpatients at a German hospital had clinically relevant body dysmorphic concerns, highlighting the need for psychotherapeutic support due to poor social adaptation and high motivation for change.

This study outlines a framework for hair longevity that emphasizes prevention and integrative management of androgenetic alopecia by proposing a multi-targeted approach combining treatments, nutrition, and lifestyle changes.

In this study, researchers observed that blue LED irradiation enhanced cosmetic permeation, increased diameter, and improved resistance of hair fiber in Caucasian and Asian ethnic groups, whereas African hair showed less change.

This review discusses the role of hair dyes in cosmetic dermatology, their effects on hair and scalp health, and the importance of dermatologists understanding potential side effects; it reports no new findings.

This study proposed a new standardized in vitro framework using human hair tresses to evaluate cosmetic hair product performance and found significant improvements in hair breakage, tensile strength, shine, volume, and frizz control compared to a control group without such changes.

This review discusses the clinical use of nutraceuticals for skin aging in dermatological practices and reports no new clinical results.