Home Hair Dye Kit
Box with two bottles, gloves and sachet
Every box holds four separate plastic items, three of them single use. Dye residue also makes the bottles unattractive to recyclers.
Material breakdown
4 components- HDPE developer bottle34g
- Colourant tube14g
- Disposable gloves6g
- Conditioner sachet8g
Production footprint
Per unitEstimated upstream manufacturing footprint per unit, based on resin LCA averages.
Lower-impact alternatives
- Salon colour serviceBulk product, far less packaging per head.4gplastic
- Henna powder in paperPlastic-free and compostable.0gplastic
- Refill colour pouch systemKeeps the applicator bottle, refills the colour.20gplastic
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References for this item
Peer-reviewed studies and institutional reports behind the figures above.
- Degradation Rates of Plastics in the Environment ↗Chamas, A., Moon, H., Zheng, J., Qiu, Y., Tabassum, T., Jang, J. H., Abu-Omar, M., Scott, S. L. & Suh, S. (2020) · ACS Sustainable Chemistry & Engineering, 8(9), 3494–3511
Open-access review that harmonises plastic degradation studies into a specific surface degradation rate, giving half-lives from 58 years for an HDPE bottle to 1,200 years for thick HDPE pipe. Peer-reviewed basis for how our decomposition windows scale with wall thickness and format.
- Ranking environmental degradation trends of plastic marine debris based on physical properties and molecular structure ↗Min, K., Cuiffi, J. D. & Mathers, R. T. (2020) · Nature Communications, 11, 727
Ranks PE, PP, PET, PS, PVC and nylon by measured degradation susceptibility and shows that thickness, crystallinity and additives shift estimated lifetimes by one to two orders of magnitude. Backs our practice of scaling persistence by format rather than by polymer alone.
- Monitoring polymer degradation under different conditions in the marine environment ↗Beltrán-Sanahuja, A., Casado-Coy, N., Simó-Cabrera, L. & Sanz-Lázaro, C. (2020) · Environmental Pollution, 259, 113836
Field study exposing PET, LDPE, HDPE, PP and PS in seawater, sediment and beach sand for nine months; conventional polymers lost under a few percent of their mass. Direct measured evidence for the very slow marine degradation behind our long persistence windows.
- Alteration and progressive degradation of plastic waste in a Polish operational landfill analysed over 60 years ↗Redko, V., Wolska, L., Cieślak-Piotrowicz, A. et al. (2024) · Communications Earth & Environment, 5, 563
Excavated polyethylene bags and film buried for up to six decades in a working landfill and found only partial surface oxidation, not disappearance. Real-world confirmation that landfilled film persists far beyond the lifetimes often quoted.