Toxic Effects of Skin-Lightening Products in Canadian Immigrants
Bibliographic record
Abstract
BACKGROUND: The cultural practice of skin bleaching is highly prevalent in Africa. Most reported cases of toxic effects of skin-lightening products occur in this region. OBJECTIVE: To describe cases of misuse of over-the-counter (OTC) cosmetic skin-lightening products occurring in Canadian immigrants. METHODS: Two cases of Canadian immigrants with severe complications from OTC skin-bleaching agents were identified in a community-based dermatology practice in Toronto. The case histories were reviewed and analyzed. RESULTS: A 28-year-old African-Canadian woman developed extensive striae from long-term use of a topical cream containing clobetasol that she had purchased in a Caribbean health food store. A 55-year-old African-Canadian woman developed exogenous ochronosis from the use of a topical bleaching agent she had purchased in Ghana. CONCLUSION: Cosmetic skin lightening with unregulated topical products occurs in Canada. Dermatologists working in Canada need to be aware of this practice to provide appropriate directive care.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".