Reusable products are sold on environmental grounds, and the honest answer depends on how long you keep it.
The Break-Even Idea
A durable product takes more material and energy to make than a disposable one.
It only comes out ahead once it has displaced enough disposables to offset that. That point is the break-even, and it is reached quickly for some products and slowly for others.
A reusable bottle that lasts years and replaces dozens of aerosol cans is clearly ahead. One bought, used twice and abandoned in a cupboard is not.
What Makes It Actually Work
- Keeping it for years rather than months
- Actually refilling it rather than buying disposables anyway
- Maintaining it so it does not fail early
- Choosing one you will genuinely use
- Not owning six when two would do
Where a range is built on refillable bottles rather than disposable cans, of the kind described at https://flairosol.us.com/, the benefit is real and it depends entirely on the second and third points on that list.
The Aerosol Comparison
Aerosol cans contain a propellant, are pressurised, and are single-use.
Modern propellants are generally hydrocarbons rather than the ozone-depleting compounds phased out under international agreement decades ago, and they are flammable and are volatile organic compounds.
Cans are recyclable in many areas when empty, and frequently are not recycled in practice.
Buying More Is Not Sustainability
The point worth being honest about. Owning several reusable bottles because they are attractive is consumption rather than a saving.
The greenest bottle is the one already in your cupboard, and the second greenest is one bought to replace something you were actually buying repeatedly.
Repair Before Replacing
Most sprayer failures are a blocked nozzle or a perished seal, both of which are cleanable or replaceable where spares exist.
Checking whether spare heads are available before buying is a durability question rather than a green one, and it amounts to the same thing.
Dispose Properly
Mixed-material sprayers are awkward to recycle; separating the parts where possible helps.
Use It Until It Fails
Which is the whole argument.
Buy for Use, Not for Virtue
A bottle bought because it looks sustainable and then not used is worse than the disposable it replaced.
Check Spare Availability
A product that can be repaired is a product that reaches its break-even.