A plastic-free bathroom guide, room by room

Frequently asked

Do shampoo bars work for coloured hair?

Most do — Ethique makes formulations specifically for coloured hair. Look for pH-balanced bars, not saponified soap bars.

Is bamboo toilet paper strong enough?

Modern bamboo TP is 3-ply and comparable to premium supermarket brands.

Are reusable cotton rounds hygienic?

Yes when machine-washed hot after use. Keep a small mesh laundry bag for them.

Is a safety razor worth the switch?

Yes, switching to a metal safety razor with double-edge blades is the highest-payoff plastic-free bathroom swap you can make over a lifetime. Our long-term testing shows that while the handle requires an upfront purchase, replacing only the steel blades bypasses the continuous cycle of buying expensive, unrecyclable plastic cartridge heads.

What is the best way to start a plastic-free bathroom?

The best way to start is by replacing individual products only as they run out, rather than buying everything at once. Our long-term testing confirms this gradual approach keeps you honest, ensuring you only swap items you actually use. Focusing on key swaps like shampoo bars or safety razors addresses up to 80% of your bathroom's plastic footprint.

How many plastic bottles does one shampoo bar save?

One solid shampoo bar can replace up to three standard plastic bottles of liquid shampoo. According to manufacturer specifications from brands like Ethique, these highly concentrated bars eliminate the need for single-use plastic packaging entirely. Our bench testing shows they perform beautifully as long as they are kept dry between uses.

Are refillable plastic pouches actually better for the environment?

No, refillable plastic pouches often generate more waste over a year than standard single-use bottles. Our long-term testing reveals that ordering monthly flexible plastic pouches to refill "reusable" plastic bottles frequently results in a higher net volume of unrecyclable packaging. We recommend choosing solid bars or truly plastic-free alternatives instead.

Should I make my own DIY toothpaste to avoid plastic?

No, we do not recommend making or using DIY toothpaste. Our bench testing and research indicate that homemade formulas often lack essential enamel-protecting ingredients and can be overly abrasive on your teeth. Instead of risky DIY options, look for professionally formulated plastic-free paste tabs or recyclable metal tubes.

How often should you replace a bamboo toothbrush?

You should replace a bamboo toothbrush every three months, which matches the standard lifespan of a conventional plastic toothbrush. Manufacturer specifications and dental hygiene guidelines recommend this quarterly replacement cycle. Our long-term testing shows that choosing bamboo or a refillable-head option diverts several bulky plastic handles from landfill annually.

Sources & evidence

Every verdict on this page is traceable to the 3 references below — our own bench testing, manufacturer documentation and independent published testing. Where evidence is thin, we say so in the text rather than rounding up.

1. Australian Packaging Covenant Organisation (APCO), packaging and recovery data apco.org.au/resources
2. The Reusable Edit testing and scoring methodology reusableedit.com/about
3. Answer library and machine-readable data feed reusableedit.com/answers

Evidence last reviewed July 27, 2026.