# Fashion and beauty, side by side

> Side-by-side comparisons with the bottom line first and every fact sourced.

- Canonical: https://thecastindex.com/compare
- Answers: https://thecastindex.com/answers

- [Runway vs Commercial Modelling](https://thecastindex.com/compare/runway-vs-commercial-modelling) — Runway models walk in designer shows; commercial models sell products in adverts, online shops and TV. Agencies that publish heights for fashion boards, such as MIKAs and Stockholmsgruppen, ask women for roughly 170–180 cm, while their commercial divisions set no height. Commercial fees depend on how widely the images are used.
- [Paris vs Milan Fashion Week](https://thecastindex.com/compare/paris-vs-milan-fashion-week) — Milan Fashion Week is run by Camera Nazionale della Moda Italiana and shows just before Paris each season. Paris Fashion Week is run by the Fédération de la Haute Couture et de la Mode, which also holds a separate couture week. Both official programmes are invitation-only, but many shows are livestreamed.
- [Seoul vs Tokyo Fashion Week](https://thecastindex.com/compare/seoul-vs-tokyo-fashion-week) — Seoul Fashion Week is a city-government event, run by the Seoul Metropolitan Government from Dongdaemun Design Plaza. Rakuten Fashion Week Tokyo is run by the Japan Fashion Week Organization, mainly at Shibuya Hikarie. Both are held twice a year, overlap in early September, and offer public ticket draws and livestreams.
- [Haute Couture vs Ready-to-Wear](https://thecastindex.com/compare/haute-couture-vs-ready-to-wear) — Haute couture is a legally protected French designation for original, made-to-measure clothes sewn by hand in a house’s French workshops and shown in Paris each January and July. Ready-to-wear, or prêt-à-porter, is made in standard sizes and larger quantities, shown in February–March and September–October, and sold far more widely.
- [Retinol vs Retinal (Retinaldehyde)](https://thecastindex.com/compare/retinol-vs-retinal) — Retinol and retinal are vitamin A derivatives that skin converts into retinoic acid, the active form. Retinal is one step closer, because retinol must first become retinal. Reviews find retinol gentle but modest and rate retinal more effective while still fairly well tolerated. Both are milder than prescription tretinoin.
- [Mineral vs Chemical Sunscreen](https://thecastindex.com/compare/mineral-vs-chemical-sunscreen) — Mineral sunscreens use zinc oxide or titanium dioxide; chemical sunscreens use organic filters such as avobenzone or octocrylene. Both mainly absorb UV. The FDA has proposed only the two minerals as safe and effective and wants more data on 12 organic filters, without calling them unsafe. The EU and UK allow listed filters of both kinds.