Nutritional Cosmetology: A Comprehensive Review of Dietary Interventions, Supplements, Prebiotics, Normal Flora, and Daily Habits

December 2025 in “ International Journal of Clinical Medical Research ”

Mohamed A. Soliman, Youssef Basem, Hadeel Mohamed, Sara Mansour, Rehab Abdelmonem

Studysummary This review explores the role of nutrition and probiotics in enhancing skin, hair, and nail health through gut microbiota, highlighting the potential of nutritional interventions for cosmetic benefits via the gut-skin axis. Our plain-language summary of this paper — not a Tressless recommendation.

Nutritional cosmetology is an interdisciplinary field that examines the impact of diet and gut microbiota on skin, hair, and nail health. This review highlights the gut-skin axis, explaining how dietary components and gut microbiota affect dermatological health through immune modulation and systemic signaling. Probiotics, as live microorganisms, show promise in treating skin conditions like acne and psoriasis and may benefit hair growth and nail integrity. The review discusses probiotic types, mechanisms, clinical applications, and future research, advocating for a holistic approach to beauty that integrates nutrition and dermatology. Personalized and innovative nutritional interventions are expected to improve cosmetic outcomes.

View this study on pharaohacademy.com →

Discuss this study in the Community →

Research cited in this study

11 / 11 results

research Efficacy and Safety of Latilactobacillus Curvatus LB-P9 on Hair Health: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial

5 citations , November 2024 in “Frontiers in Nutrition”

In this randomized controlled trial, oral intake of the probiotic Latilactobacillus curvatus LB-P9 significantly improved hair luster, elasticity, and participant satisfaction in individuals with mild to moderate hair damage compared to placebo, without significant adverse effects reported.

research A Review on Androgenic Alopecia: Etiology, Pathogenesis, Pharmacological and Non-Pharmacological Treatment Approaches

September 2024 in “Ain Shams Medical Journal”

This review discusses the prevalence, pathogenesis, and treatments of androgenic alopecia but reports no new research findings; the authors emphasize the need for further exploration of novel treatment options.

research Randomized Clinical Trial to Evaluate the Effect of Probiotic Intake on Androgenic Alopecia

August 2024 in “Nutrients”

This study found that a combination of probiotic strains of Lactiplantibacillus administered over 16 weeks reduced the number and density of telogen hairs in individuals with androgenic alopecia, while increasing the abundance of Lactobacillus in their gut microbiota.

research Recent Advances in Single-Cell Engineered Live Biotherapeutic Products Research for Skin Repair and Disease Treatment

1 citations , December 2023 in “npj biofilms and microbiomes”

This review highlights the potential of genetically or metabolically engineered live biotherapeutic products (eLBPs) for skin repair and disease treatment but emphasizes that translating these innovations into practical clinical applications remains challenging, requiring further research and development.

research The Role of Vitamins and Minerals in Hair Loss: A Review

134 citations , December 2018 in “Dermatology and Therapy”

This review discusses the potential role of vitamins and minerals in managing non-scarring alopecia but reports no clinical results; the authors advocate for further controlled trials to explore these relationships.

research Diet and Hair Loss: Effects of Nutrient Deficiency and Supplement Use

79 citations , January 2017 in “Dermatology practical & conceptual”

This article addresses the need to screen for nutrient deficiencies in patients with hair loss but reports no new findings, noting that supplementation without deficiency may not be beneficial and could pose risks.

research A Review of the Use of Biotin for Hair Loss

78 citations , January 2017 in “Skin appendage disorders”

This review discusses the use of biotin for hair and nail growth, noting clinical improvement in cases with existing pathologies, but concludes there is insufficient evidence supporting its benefits for healthy individuals.

research Probiotic Bacteria Induce a Glow of Health

127 citations , January 2013 in “PLOS ONE”

This study found that feeding aged mice a probiotic yogurt induced changes leading to thicker, healthier fur, suggesting a bacteria-triggered interleukin-10-dependent mechanism that mimics signs of youth and reproductive fitness.

research Is There a Gut-Brain-Skin Axis?

185 citations , January 2010 in “Experimental Dermatology”

This study introduces the concept of a "gut–brain–skin axis" where ingesting a specific Lactobacillus strain in mice may reduce stress-induced skin inflammation and hair growth inhibition.

research The Hair Follicle as a Dynamic Mini-Organ

759 citations , February 2009 in “Current Biology”

This review summarizes fundamental concepts and recent advancements in hair follicle biology, including insights from mouse models into broader molecular and cellular processes relevant to regeneration and development.

research The Biology of Hair Follicles

1113 citations , August 1999 in “The New England Journal of Medicine”

This article discusses the biologic and psychosocial significance of hair, the current limitations in hair growth drugs, and anticipates future therapies based on advancing hair follicle research.