Daily Cosmetic Research Analysis
Analyzed 5 papers and selected 3 impactful papers.
Summary
Analyzed 5 papers and selected 3 impactful articles.
Selected Articles
1. Integrating new habits and practices data and homecare products into the Creme RIFM Aggregate Exposure Model.
This manuscript documents Phase III updates to the Creme RIFM aggregate exposure model: 2007–2008 habits-and-practices inputs were replaced with 2014–2015 Kantar Worldpanel data, product lists were expanded (including household care products), and additional countries and age groups were added, enabling more current and comprehensive exposure assessments for fragrance ingredients.
Impact: Expands and modernizes exposure inputs used in regulatory risk assessments for fragrance and personal care ingredients, affecting safety assessments across industry and regulators.
Clinical Implications: Indirect clinical impact: improved consumer safety assessments may influence formulation decisions, regulatory limits, and ultimately reduce population-level exposure to harmful cosmetic ingredients.
Key Findings
- Updated habits-and-practices inputs replaced 2007–2008 Kantar data with 2014–2015 surveys for the same products.
- Product list expanded to include additional personal care and household care products and new age groups/countries, altering exposure factor inputs compared to prior model versions.
- The dynamic model structure permits future updates as new concentration and habit data become available, supporting iterative regulatory assessments.
Methodological Strengths
- Integration of manufacturer concentration data with large-scale Kantar habits-and-practices survey data.
- Model architecture designed for iterative updates and expansion across product categories, countries, and age groups.
Limitations
- Relies on manufacturer-provided concentration data which may vary in coverage and quality across suppliers.
- Survey data reflect self-reported use patterns and may not capture all niche products or rare high-exposure behaviors.
Future Directions: Incorporate additional empirical concentration datasets, biomonitoring data where available, and expand population subgroups (e.g., infants) to refine aggregate exposure estimates and support risk prioritization.
The Research Institute for Fragrance Materials (RIFM) and Creme Global, in collaboration with fragrance and consumer products industries, have developed an aggregate exposure model for fragrance ingredients in cosmetics, personal care, and air care products. At the core of this model is product concentration data provided by manufacturers (fragrance suppliers and consumer product companies) and habits and practices survey data collected by Kantar Worldpanel. The model is dynamic and flexible, allowing for updates based on new data and evolving science, with several updates released since its inception. In the most recent phase of model development (Phase III), the 2007-2008 Kantar Worldpanel survey data have been updated, replacing them with habits and practices survey data collected in 2014 and 2015 for the same products acquired during the Phase I and Phase II updates to the model. In addition to replacing existing data, the new survey includes data on additional products, countries, and expanded age groups. The list of products in the model was also expanded to include several household care products. This manuscript summarizes the new data and presents comparisons between the exposure factor inputs for the new and old models.
2. Outcomes of cosmetic suturing versus tissue adhesive for pediatric forehead lacerations: A retrospective cohort study adjusting for injury severity.
In a retrospective cohort of 265 pediatric forehead lacerations, tissue adhesive was associated with a higher incidence of dynamic expression dimpling (11.5% vs 3.0%) and was an independent risk factor after PSM (OR 3.92). Long-term 12-month scar severity (VSS) correlated with initial wound depth and postoperative laser therapy, not closure method.
Impact: Directly informs wound-closure choices in pediatric facial trauma by quantifying a substantial increase in contour deformity risk with tissue adhesive, influencing surgical decision-making for cosmetically sensitive areas.
Clinical Implications: Clinicians should prefer layered cosmetic suturing for deep pediatric forehead lacerations to reduce the risk of expression-related contour deformity; consider routine follow-up and use of postoperative laser therapy to optimize scar appearance.
Key Findings
- Tissue adhesive group had higher incidence of postoperative dynamic expression dimpling (11.5% vs 3.0%, P=0.007).
- After propensity score matching, tissue adhesive remained an independent risk factor for expression dimpling (OR=3.92, P=0.029).
- 12-month VSS was predicted by initial wound depth (β=0.312, P<0.001) and postoperative laser therapy (β=-0.205, P=0.001); closure method did not predict long-term VSS (P=0.345).
Methodological Strengths
- Moderate sample size (N=265) with post-hoc power analysis and use of multivariable regression.
- Sensitivity analyses using propensity score matching to address selection bias due to baseline wound severity differences.
Limitations
- Retrospective design with observed selection bias (suture group had deeper/longer wounds), limiting causal inference.
- Single-center/time-limited cohort (Oct 2023–May 2024); generalizability to other settings or older patients may be limited.
Future Directions: Prospective randomized trials or pragmatic trials stratified by wound depth are needed to confirm causality; investigate whether specific adhesive techniques or adjuncts (e.g., subcutaneous approximation) mitigate dimpling risk; standardize postoperative laser protocols for scar optimization.
PURPOSE: To compare the clinical outcomes of cosmetic layered suturing versus medical tissue adhesive in pediatric forehead lacerations, with specific emphasis on the risk of dynamic expression dimpling and long-term scar quality, after adjusting for baseline wound severity.
METHODS: A retrospective cohort study was conducted on 265 pediatric patients with acute forehead trauma treated between October 2023 and May 2024. Patients were stratified into a Cosmetic Suture Group (n=135) and Tissue Adhesive Group (n=130). A post-hoc power analysis confirmed sample adequacy. Baseline characteristics were analyzed to identify selection bias. The primary outcomes were the incidence of dynamic expression dimpling and 12-month Vancouver Scar Scale (VSS) score. Multivariable regression and sensitivity analyses using propensity score matching (PSM) were performed.
RESULTS: Significant selection bias was observed: the Suture Group managed wounds that were significantly deeper (P<0.001) and longer (P<0.001). Despite treating less severe injuries, the Adhesive Group exhibited a significantly higher incidence of postoperative dynamic expression dimpling (11.5% vs. 3.0%, P=0.007). Sensitivity analysis via PSM confirmed that tissue adhesive was an independent risk factor for expression dimpling (OR=3.92, P=0.029). Regarding long-term scar appearance, linear regression revealed that 12-month VSS scores were predicted by initial wound depth (β=0.312, P<0.001) and the use of postoperative laser therapy (β=-0.205, P=0.001), rather than the closure method itself (P=0.345).
CONCLUSION: Although tissue adhesives offer procedural convenience, they are associated with a quadrupled risk of dynamic expression dimpling compared to suturing, likely owing to inadequate approximation of the underlying frontalis muscle. Layered cosmetic suturing is essential for preventing contour deformities in deep lacerations. Furthermore, postoperative laser therapy is a validated independent factor for optimizing scar outcomes.
3. Yellow Laser Photocoagulation of Deep Conjunctival Nevus: A Minimally Invasive Technique.
Prospective interventional case series (10 eyes) found yellow (577 nm) laser photocoagulation achieved complete resolution in 85% (6/7 adequately treated eyes) with no recurrence at mean 10.5-month follow-up and minimal ocular-surface changes; one adverse event of conjunctival scarring occurred after inadvertent Tenon's capsule application.
Impact: Introduces a minimally invasive outpatient approach for deep conjunctival nevi that may avoid excisional surgery and its morbidity, with potential to change practice in oculoplastic/ocular surface clinics.
Clinical Implications: Yellow laser photocoagulation can be considered as an outpatient alternative to excision for selected stable, deeply pigmented conjunctival nevi, with attention to technique to avoid Tenon's capsule injury.
Key Findings
- Treatment completed in one session for 90% of eyes; one larger lesion required a second session.
- No significant changes in ocular surface tests (Schirmer I, Oxford staining, OSDI, tear meniscus, NIKBUT).
- At mean 10.5-month follow-up, 85% (6/7) of fully treated eyes had complete resolution; no recurrences reported; one case of conjunctival scarring from inadvertent Tenon's application.
Methodological Strengths
- Prospective interventional design with standardized laser parameters and predefined ocular-surface outcome measurements.
- Objective imaging (anterior segment OCT) used to confirm subepithelial lesion location and document response.
Limitations
- Small sample size (10 eyes) and limited follow-up for some cases (range 3–17 months), restricting generalizability.
- No control group (excisional surgery) and potential selection bias toward clinically stable lesions.
Future Directions: Larger controlled studies comparing laser photocoagulation to surgical excision with longer follow-up and standardized cosmetic outcome metrics; technique optimization to minimize risk of Tenon's injury.
PurposeTo evaluate the safety and efficacy of yellow laser photocoagulation for deep conjunctival nevi.MethodologyThis prospective interventional case series included patients with clinically stable conjunctival nevi for ≥6 months. Treatment was performed using the Iridex yellow laser (577 nm) under topical anesthesia, with a 200-micron spot, 80 ms exposure, and 300-600 mW power. The lesion was removed with sterile cotton buds post-laser, and topical steroids were prescribed for one week. Follow-up was at day 1, week 1, month 1, and month 3, assessing ocular surface health and lesion resolution. Examinations included Schirmer Test 1, Oxford corneal staining, Ocular Surface Disease Index (OSDI), tear meniscus height, and non-invasive keratograph break-up time (NIKBUT).ResultsThe study included 10 eyes from 9 patients. Mean age was 30 years (range: 6-63), with a 1:1 sex ratio. Anterior segment OCT confirmed subepithelial lesions in all, with intralesional cysts in 60%. Mean nevus diameter was 4.2 mm (range: 2-11), and 70% showed severe pigmentation. Laser treatment was completed in one session for 90% of eyes; one required a second due to large size. No significant changes were observed in ocular surface parameters. At a mean follow-up of 10.5 months (range: 3-17), 85% (6/7) of eyes had complete resolution when the laser was fully applied. No recurrence occurred. One patient developed conjunctival scarring from inadvertent Tenon's capsule application.ConclusionYellow laser photocoagulation is a safe, effective, minimally invasive outpatient treatment for conjunctival nevi, including deeply pigmented cases. It yields excellent cosmetic outcomes with minimal side effects, supporting its role as a potential standard of care.