Daily Cosmetic Research Analysis
Methodological advances and health services research dominate today’s cosmetic-related literature. A covalent organic framework (COF) nanofilm-enabled LDI-MS delivers sensitive, reproducible quantification of UV filter benzophenones in personal care products. A large cross-sectional NLP study links gender bias in online physician reviews to lower star ratings for female physicians, and a surgical cohort shows that vein-milking during varicocelectomy improves pain, semen parameters, and cosmetic
Summary
Methodological advances and health services research dominate today’s cosmetic-related literature. A covalent organic framework (COF) nanofilm-enabled LDI-MS delivers sensitive, reproducible quantification of UV filter benzophenones in personal care products. A large cross-sectional NLP study links gender bias in online physician reviews to lower star ratings for female physicians, and a surgical cohort shows that vein-milking during varicocelectomy improves pain, semen parameters, and cosmetic satisfaction.
Research Themes
- Analytical methods for cosmetic product safety
- Gender bias in patient perception of cosmetic/plastic surgeons
- Surgical technique optimization for cosmetic outcomes
Selected Articles
1. Covalent Organic Framework Nanofilm-Assisted Laser Desorption Ionization Mass Spectrometry for the Determination of Benzophenone Derivatives in Personal Care Products.
A TAPB-DMTP COF nanofilm used as an LDI-MS substrate yields stronger signals and cleaner backgrounds than standard organic matrices for small molecules. The method quantifies BP-1 in personal care products with excellent linearity (1–20 μg/mL, r=0.9993), low LOD (0.3 μg/mL), robust reproducibility (RSD 6.10%), and 30-day stability, supporting sensitive surveillance of endocrine-disrupting UV filters.
Impact: Provides a practical, scalable analytical platform for detecting benzophenone UV filters in complex cosmetic matrices, enabling regulatory monitoring and exposure assessment. The COF-LDI-MS approach is broadly applicable to other small molecules beyond cosmetics.
Clinical Implications: Supports faster, more reliable screening of endocrine-disrupting UV filters in personal care products, informing regulatory compliance, product reformulation, and public health risk assessment.
Key Findings
- COF nanofilm-assisted LDI-MS produced stronger signals and cleaner backgrounds than CHCA, DHB, and SA for small-molecule analysis.
- Demonstrated high reproducibility (RSD 6.10%) and stability up to 30 days.
- Quantified BP-1 with excellent linearity (1–20 μg/mL, r=0.9993), low LOD (0.3 μg/mL), and recoveries of 94.2%–104.4% in personal care products.
Methodological Strengths
- Direct head-to-head benchmarking against conventional matrices (CHCA, DHB, SA).
- Comprehensive validation including reproducibility, stability, sensitivity, and application to real PCP samples.
Limitations
- Focused quantification on BP-1; broader validation across more benzophenones and other UV filters is needed.
- Single-laboratory evaluation without inter-lab reproducibility studies.
Future Directions: Extend the COF-LDI-MS platform to a panel of UV filters and cosmetic additives; conduct inter-lab validation and standardize protocols for regulatory adoption.
RATIONAL: Benzophenone derivatives, commonly used as UV filters in personal care products (PCPs), are widely prevalent and raise concerns due to their endocrine-disrupting effects. Sensitive and efficient analytical methods are in demand for their detection. In this study, we developed a TAPB-DMTP-covalent organic framework (COF) nanofilm-assisted laser desorption ionization mass spectrometry (LDI-MS) method for the quantitative analysis of 2,4-dihydroxybenzophenone (BP-1) in PCPs. METHODS: The TAPB-DMTP-COF nanofilm was synthesized on indium tin oxide (ITO) glass and utilized as an LDI-MS substrate. The performance of TAPB-DMTP-COF nanofilm-assisted LDI-MS for analyzing small molecules (e.g., benzophenone derivatives, phthalates, amino acids, sugars, and nucleosides) was compared to conventional organic matrices (α-cyano-4-hydroxycinnamic acid [CHCA], 2,5-dihydroxybenzoic acid [DHB], and sinapinic acid [SA]). The reproducibility, salt resistance, sensitivity, and stability of the method were further evaluated. Finally, the technique was applied to quantify BP-1 in PCPs. RESULTS: The TAPB-DMTP-COF nanofilm-assisted LDI-MS provided stronger mass spectral signals and cleaner backgrounds for small molecules compared to CHCA, DHB, and SA. The method exhibited high reproducibility (RSD = 6.10%) and stability for up to 30 days. BP-1 in PCPs was quantified with excellent linearity (1-20 μg/mL, r = 0.9993), a low detection limit (0.3 μg/mL), and recovery rates of 94.2%-104.4%, demonstrating the potential of TAPB-DMTP-COF nanofilm for sensitive and reliable small-molecule analysis. CONCLUSION: TAPB-DMTP-COF nanofilm-assisted LDI-MS offered the advantages of rapid analysis, clean backgrounds, and reproducibility for detecting small molecules, including benzophenone derivatives. This method successfully quantified BP-1 in PCPs, highlighting its suitability for analyzing complex samples.
2. Physician Gender and Patient Perceptions of Interpersonal and Technical Skills in Online Reviews.
In 345,053 reviews of 167,150 US physicians, female physicians were more likely to receive negative comments on interpersonal manner and technical competence, and these negatives disproportionately reduced their odds of high star ratings—especially for female primary care physicians and surgeons. The findings highlight pervasive gender bias in online assessments.
Impact: Provides large-scale, quantitative evidence of gender bias in patient reviews, informing how rating platforms and institutions should interpret and mitigate biased feedback—relevant for cosmetic/plastic surgery where online reputation heavily influences patient choice.
Clinical Implications: Clinicians and institutions should contextualize online ratings with bias-aware frameworks, adjust quality metrics to mitigate gender bias, and consider educational messaging to patients about responsible reviewing.
Key Findings
- Female physicians had higher odds of receiving negative comments on interpersonal manner (overall OR 1.22; 95% CI, 1.18–1.26).
- Negative comments on technical competence disproportionately reduced the odds of high star ratings for female PCPs (OR 0.60; 95% CI, 0.50–0.73) and female surgeons (OR 0.67; 95% CI, 0.50–0.89).
- Female PCPs were less likely than male PCPs to receive high star ratings even when receiving positive technical competence comments (OR 0.82; 95% CI, 0.70–0.96).
Methodological Strengths
- Very large sample with specialty stratification and multilevel logistic modeling.
- Hand-coded training set to fine-tune NLP classification of comment presence and valence.
Limitations
- Cross-sectional design; causality cannot be inferred and unobserved confounding (e.g., case mix) may persist.
- Selection bias of online reviewers and platform-specific effects may limit generalizability.
Future Directions: Test interventions that de-bias ratings (e.g., calibrated displays, reviewer prompts), link review data to clinical outcomes, and replicate across platforms and countries.
IMPORTANCE: Prior studies have revealed gender differences in workplace assessments of physicians, but little is known about differences by physician gender in patients' online written reviews. OBJECTIVE: To analyze whether patients' perceptions of their physicians' interpersonal manner and technical competence differ by physician gender and practicing specialty and are associated with review star ratings. DESIGN, SETTING, AND PARTICIPANTS: This cross-sectional study sampled written reviews submitted by patients between October 16, 2015, and May 27, 2020, for physicians across the US from a commercial physician rating and review website. Physicians included primary care physicians (PCPs) listed under family medicine, internal medicine, and pediatrics and surgeons listed under general surgery; orthopedic surgery; and cosmetic, plastic, and reconstructive surgery. Hand-coded reviews were used to fine-tune a natural language processing algorithm to classify all reviews for the presence and valence of patients' comments of physicians' interpersonal manner and technical competence. Statistical analyses were performed from July 2022 to December 2024. EXPOSURE: Female or male physician gender. MAIN OUTCOMES AND MEASURES: Outcomes included the presence and valence of interpersonal manner and technical competence comments and receipt of high star ratings. Multilevel logistic regressions analyzed differences by female or male physician gender in interpersonal manner and technical competence comments and whether those comments were associated with review star ratings. RESULTS: The analysis included 345 053 written reviews of 167 150 physicians (mean [SD] age, 55.16 [11.40] years); 60 060 physicians (35.9%) were female, and 36 132 (21.6%) were surgeons. Female physicians overall had higher odds than males of receiving any (odds ratio [OR], 1.19; 95% CI, 1.16-1.22) or negative (OR, 1.22; 95% CI, 1.18-1.26) patient comments for their interpersonal manner. Among PCPs, females had higher odds than males of receiving a negative comment for interpersonal manner (OR, 1.22; 95% CI, 1.18-1.27) and, when receiving that negative comment, had disproportionately lower odds of receiving a high star rating (OR, 0.62; 95% CI, 0.53-0.73). Female physicians overall (OR, 1.09; 95% CI, 1.05-1.13) and female PCPs (OR, 1.08; 95% CI, 1.04-1.13) had higher odds than their male counterparts of receiving a negative comment for their technical competence. When receiving a negative comment for technical competence, both female PCPs (OR, 0.60; 95% CI, 0.50-0.73) and female surgeons (OR, 0.67; 95% CI, 0.50-0.89) had disproportionately lower odds of receiving a high star rating compared with their male counterparts. Female PCPs also had lower odds than male PCPs of receiving a high star rating when receiving a positive comment for technical competence (OR, 0.82; 95% CI, 0.70-0.96). CONCLUSIONS AND RELEVANCE: In this cross-sectional study of online written reviews, female and male physician gender were differently associated with patients' perceptions of their physicians' interpersonal manner and technical competence. The findings suggest that patients harbored negative gender biases about the interpersonal manner of female physicians, especially female PCPs, and also assessed disproportionate penalties related to technical competence for both female PCPs and female surgeons.
3. Drainage of varicose veins during subinguinal microscopic varicocelectomy (vein milking): Does it affect pain, cosmetic appearance, and spermiogram?
In a two-arm cohort (n=150), vein milking during subinguinal microscopic varicocelectomy reduced early postoperative pain, improved sperm count and motility at 3 months, and increased cosmetic satisfaction compared with the classical approach. Findings support simple intraoperative drainage as a modifiable step to optimize functional and aesthetic outcomes.
Impact: Addresses both reproductive outcomes and cosmetic satisfaction with a practical, low-cost modification to a common surgery, potentially influencing surgical practice and patient counseling.
Clinical Implications: Consider vein milking as an intraoperative step to reduce early pain and enhance semen parameters and cosmetic satisfaction; randomized trials are warranted before broad adoption.
Key Findings
- Early postoperative pain (7–10 days) was significantly lower with vein milking than with the classical method (p<0.05).
- Sperm count and motility at 3 months were significantly higher in the vein-milking group (p<0.05).
- Cosmetic satisfaction scores were significantly higher with vein milking (p<0.05).
Methodological Strengths
- Comparative two-arm cohort with equal group sizes and clearly defined exclusion criteria.
- Clinically relevant, multi-dimensional outcomes (pain, semen parameters, cosmetic satisfaction) with specified time points.
Limitations
- Nonrandomized design with potential selection bias and lack of blinding.
- Short-term assessment for pain and a single 3-month semen analysis; longer-term outcomes are unknown.
Future Directions: Conduct randomized controlled trials with longer follow-up to confirm benefits and evaluate recurrence, fertility outcomes, and standardized cosmetic measures.
INTRODUCTION: Varicocele, defined as abnormal convoluted enlargement of the pampiniform plexus veins, is the most common cause of correctable male infertility. This study aimed to investigate the effect of blood drainage in varicose veins on spermiogram parameters, postoperative pain, cosmetic appearance, and patient satisfaction in patients undergoing subinguinal microscopic varicocelectomy. METHODS: Patients diagnosed with clinical varicocele and admitted to our urology outpatient clinic between January 2020 and January 2024 were evaluated. Those with a venous vessel diameter ≥ 2.5 mm underwent subinguinal microscopic varicocelectomy. In 75 patients, a small incision was made in the thickest varicose vein, and the veins were ligated after venous blood was drained by hand patting. In another 75 patients, vessels were cut and ligated by the classical method without venous blood drainage. Exclusion criteria included patients younger than 18, those with secondary varicocelectomy history, undescended testis, testicular trauma or tumors, and prior infertility treatment. Preoperative and postoperative spermiogram values, pain scores, cosmetic appearance, and patient satisfaction were recorded and compared. RESULTS: The pain rate was significantly lower (p < 0.05) in the blood-milking varicocelectomy group during postoperative controls (7-10 days) compared to the classical method group. The blood-milking group also showed significantly higher (p < 0.05) sperm count and motility at the 3rd postoperative month. Cosmetic satisfaction was significantly higher (p < 0.05) in the blood-milking group. CONCLUSIONS: Blood drainage during subinguinal microscopic varicocelectomy significantly reduces postoperative pain and enhances sperm values, cosmetic outcomes, and patient satisfaction. These findings suggest that vein-milking techniques during varicocelectomy can optimize postoperative outcomes.