# gramdang (English)

> gramdang compares cosmetics by the amount of the named ingredient in the bottle and the price of one gram or milligram of it. Numbers come from the labeled percentage and size; prices are dated. Not medical advice.

## Pages
- [Retinol in milligrams per bottle](https://en.gramdang.com/retinol/): 10 products, 20-300 mg retinol, price-per-mg calculator
- [Methodology](https://en.gramdang.com/methodology/): formula, rules, exclusions, limits

## Data
- [Products CSV](https://gramdang.com/data/products.csv) and [JSON](https://gramdang.com/data/products.json): labeled content, size, ingredient amount (Korean market, 69 products)
- Weekly Korean rankings (Coupang prices, Korean language): https://gramdang.com/