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This chapter reviews nanotechnology in cosmetics, detailing various formulations, performance assessment methods, and evolving regulations, while discussing safety, stability, and effectiveness concerns; it reports no new experimental results.

This study found that formulation factors like pH, viscosity, and chemical enhancers can significantly influence intrafollicular hydrocortisone permeation in vitro, with higher pH and enhancers reducing follicular contribution.

In this study, autophagy was commonly observed during keratinization in neonate rat hair follicles, suggesting lysosomal proteases and cytoplasmic enzymes may coordinate in hair follicle cell differentiation.

This chapter discusses the structure and function of the skin, detailing its protective roles and the layers that comprise it, but reports no new research findings.

The researchers reported that applying proteolytic enzymes to mice skin negatively affected hair follicles, leading to degeneration and potential impairment of stem cells from the bulge area.

In this study, researchers investigated EGCG's spectroscopic properties and its interaction with DPPG lipid, finding that both experimental and theoretical approaches agree on the electronic transitions and reveal an increased absorbance due to molecular interactions.

In this study, the authors found that applying hypobaric pressure to the skin significantly increases the transdermal permeation of large molecules by enhancing diffusion, despite the associated skin stretching and hair follicle enlargement not fully explaining this effect.

In this systematic review, researchers found that nanotopical systems like nanoparticles and liposomes significantly improved hair density, thickness, and follicular regeneration markers in alopecia treatment, sometimes surpassing traditional therapies like topical minoxidil, though methodological limitations remain such as insufficient long-term clinical trials.

This study found that polymers significantly improved the chemical and microbial stability of steroid hormones in liposome formulations over eight weeks, with finasteride showing the highest diffusion rate.

This study found that polymeric nanoparticles may effectively deliver finasteride topically to hair follicles, potentially improving alopecia treatment with fewer side effects than oral forms.

This review highlights that transferosomes, or ultradeformable lipids, show promise for improving dermal delivery, exhibiting efficient drug transport across the skin's barrier and offering potential benefits for treating chronic skin disorders with better bioavailability.

This review explores factors affecting graft growth and survival in hair restoration, emphasizing the importance of fundamental care practices while considering advanced storage solutions and additives, but reports no new findings.

This study found that goat placenta extract, when combined with PEGylated liposomes and microspicule gel, significantly promoted hair regrowth in patients experiencing hair loss due to chemotherapy by enhancing hair cell proliferation without causing skin irritation over a 12-week application period.

This study developed caffeine-loaded nanoparticles coated with ultradeformable liposomes for better hair follicle delivery, showing non-cytotoxicity and potential to reduce oxidative stress in DHT-damaged cells, suggesting an alternative treatment for androgenetic alopecia.

This review discusses both conventional and new pharmaceutical treatments for hair loss, as well as various natural and herbal remedies, but reports no new clinical results.

Niosomal minoxidil, when applied topically, increases hair count more than conventional minoxidil solution.

This study developed a novel liposome-based delivery system for Minoxidil and nitric oxide, which showed promising results in promoting hair regrowth in an androgenetic alopecia model by enhancing transdermal absorption, prolonging skin retention, and reducing inflammation.

This study found that using elastic nano-liposomes to deliver palmitoylethanolamide improved its transdermal delivery and enhanced its skincare effects, with minimal cytotoxicity and no allergic reactions observed.

This review highlights the potential of microalgae as sustainable sources for nutraceuticals and cosmeceuticals, emphasizing their applications in functional foods, dietary supplements, and cosmetics for roles such as anti-aging and photoprotection in alignment with sustainability principles.

This study found that the new delivery system HL@Mi enhanced the skin penetration, local bioavailability, and safety of minoxidil, supporting improved hair growth in an androgenetic alopecia animal model.

This study found that combining microneedling with 5% Minoxidil and Finasteride significantly improved hair density and hair shaft diameter in males with androgenetic alopecia, outperforming Minoxidil alone or in combination with Finasteride, although changes in hormonal levels and trace elements were not significant.

In this study, solid lipid microparticles loaded with lidocaine hydrochloride were developed to effectively deliver pain relief and antimicrobial benefits for wound management, demonstrated by testing with bioengineered skin substitutes and showing effectiveness against common wound-infecting bacteria.

This case report demonstrated that long-hair follicular unit extraction may effectively reconstruct the mustache area following surgical scarring, with high patient satisfaction and no complications observed.

This review explores how nanoparticles enhance cosmeceutical formulations, analyzing their roles in transporting active ingredients, and highlights the progress and challenges in using nanotechnology for beauty and health products.

In this study, a novel liposomal peptide formulation significantly enhanced hair growth in mice compared to minoxidil, but results on human tissue penetration were inconclusive, suggesting further research is needed for translation to human use.

This article discusses key surgical techniques for optimal graft growth in hair transplantation and presents no new research findings.

This review discusses the use of nanocarrier technology in functional cosmetics to enhance skin penetration, increase ingredient stability, and allow codelivery of active ingredients, without reporting new clinical results.

This review discusses advances in drug delivery systems to enhance oleanolic acid's bioavailability and therapeutic potential but reports no new clinical results.

In this study, researchers reviewed literature on topical delivery of finasteride for androgenetic alopecia, finding that liposomal gels with specific additives showed the highest skin permeation rates, suggesting potential for reducing systemic side effects compared to oral formulations.