What is the difference between bio and non-bio detergent?

Enzymes. Biological detergent contains enzymes (proteases, lipases, amylases) that break down sweat, food and body-oil stains and work well at 30–40°C. Non-biological detergent has no enzymes and relies on surfactants, generally needing higher temperatures for the same organic stains.

Is bio or non-bio better for everyday laundry?

For everyday adult laundry — shirts, gym kit, bedding — biological detergent is generally the stronger choice because enzymes directly target the sweat and body-oil stains daily wear produces, and work at 30°C. Non-bio remains the UK convention for newborn laundry and for those given specific guidance.

Can you use biological detergent on wool and silk?

No. Protease enzymes break down protein, and wool, silk and cashmere are protein fibres, so a biological detergent can gradually degrade the fibre itself rather than just the stain. Use a non-biological detergent or a dedicated wool wash, cool water and a delicate cycle for animal fibres.

Are laundry detergent sheets bio or non-bio?

It depends on the formula, not the format — sheets can be either, as can powder, liquid and capsules. Element for Men's detergent sheets are biological: they use protease and lipase enzymes to break down sweat and body-oil stains at low temperatures.

Is bio washing powder different from bio washing liquid?

Only in format. The bio and non-bio distinction is about whether enzymes are present, and that applies identically to powder, liquid, capsules and sheets. Powder is more often sold for higher-temperature whites and heavy soiling, while liquid and sheets are positioned for 30°C everyday washing, but that is a positioning difference rather than a chemistry one.

Does biological detergent damage clothes?

On cotton and synthetic fabrics, enzymes target stains rather than fabric, and the more common causes of wear are overdosing, overloading the drum and unnecessary heat. The genuine exception is protein fibres — wool, silk and cashmere — which biological detergent can degrade over repeated washes.

Does water hardness affect the bio or non-bio choice?

Not meaningfully. Water hardness affects how well surfactants lather and how much limescale builds up in the machine, rather than whether enzymes work. In hard-water areas the more useful steps are dosing correctly and running an occasional hot maintenance wash on the empty machine.

Bio vs Non-Bio Detergent: The Difference, Explained Properly

Short answer: the only difference between bio and non-bio detergent is enzymes. Bio contains them — proteins that break down sweat, food and body-oil stains, and work well at lower temperatures. Non-bio doesn't, so it relies on surfactants and hotter washes. That's the whole distinction. Everything else is marketing.

"Bio or non-bio?" is the most-asked detergent question in the UK — and the answers online are mostly padding. Here is the actual difference, what it means in practice, and how to choose without overthinking it.

The one real difference: enzymes

Biological detergent contains enzymes — typically proteases (which break down protein stains: sweat, blood, grass, egg), lipases (fats and body oils) and amylases (starches). Enzymes are catalysts: they dismantle the stain itself, which is why bio formulas clean effectively at 30–40°C. Lower temperature, same result — better for energy bills and better for your clothes.

Non-biological detergent contains no enzymes. It cleans with surfactants alone, which generally need higher temperatures or longer cycles to shift the same organic stains.

So why does non-bio exist?

Convention, mostly. Non-bio is traditionally marketed for sensitive skin, and it remains the default recommendation for newborn laundry in the UK. If that's your situation, follow the guidance you trust. For everyday adult laundry — shirts, gym kit, bedding, the clothes you actually wear — enzymes are what remove the stains your body puts there daily.

Bio vs non-bio at a glance

	Bio	Non-bio
Enzymes	Yes	No
Sweat, body oil, food stains	Strong — enzymes target them directly	Weaker — needs heat to compensate
Works at 30°C	Yes — designed for it	Less effective
Wool and silk	Avoid — see below	Safer choice
Typical positioning	Everyday performance	Sensitive-skin and baby laundry convention

Is it biological or non-biological washing powder, liquid or sheets?

The bio/non-bio question is about formula, not format. Washing powder, washing liquid, capsules and detergent sheets can each be biological or non-biological — the label will say. There is no format that is inherently one or the other, and the phrase you type into a search box (bio washing powder, bio and non bio washing liquid, biological or non biological detergent) is describing the same single distinction.

Where format genuinely matters is temperature. Powder tends to be sold in higher-temperature, whites-and-heavy-soiling territory, and liquid and sheets in the 30°C everyday range. That is a positioning difference, not a chemistry one. The full format comparison is here.

The one place bio genuinely is the wrong choice: wool and silk

This is the caveat most bio-versus-non-bio articles leave out, and it matters more than any of the myths below.

Protease enzymes break down protein. Wool, silk, cashmere and other animal fibres are protein. A biological detergent used repeatedly on a wool jumper or a silk shirt can degrade the fibre itself — not the stain on it — leaving the garment thinner, weaker and duller over time. It is gradual rather than dramatic, which is why people rarely connect the cause to the effect.

For wool and silk, use a non-bio detergent or a dedicated wool wash, cool water and a delicate cycle. This is the same principle behind washing linen properly: match the detergent to the fibre rather than using one thing for everything.

Where do detergent sheets sit?

A detergent sheet is just detergent in a concentrated, pre-measured format — so the bio vs non-bio question applies to sheets exactly as it does to liquid or powder. It depends on the formula, not the format.

Element's detergent sheets are biological: the formula uses enzymes — proteases and lipases — because the loads our customers actually run are shirts worn through long days, gym kit and bedding. Those are protein-and-oil stains, and enzymes are the honest tool for the job. One sheet in the drum, a 30°C cycle, done. Keep them off your wool, per the section above.

Does bio or non-bio matter for hard water?

Less than people assume. Water hardness affects how well surfactants lather and how much limescale builds up in the machine, not whether enzymes work. In a hard-water area the more useful changes are dosing correctly rather than over-dosing, and running an occasional hot maintenance wash on the empty machine. Neither is a bio/non-bio decision.

Three myths worth retiring

"Bio damages clothes." On cotton and synthetics, enzymes target stains rather than fabric — the everyday risks to those clothes are overdosing, overloading and unnecessary heat, all of which a pre-measured sheet at 30°C helps you avoid. The genuine exception is protein fibres: wool and silk, covered above. So the myth is half wrong, which is why it persists.

"Non-bio doesn't clean." It does — it just works harder at higher temperatures for organic stains. If you run hot washes anyway, the gap narrows considerably.

"Bio smells stronger." Scent has nothing to do with enzymes. Fragrance is a separate part of any formula — which is why we treat it as seriously as the cleaning. That's its own subject.

How to choose in ten seconds

Everyday adult laundry, lower temperatures, real stains: bio. Wool, silk or cashmere: non-bio or a dedicated wool wash. Newborn laundry, or specific guidance you have been given: non-bio. That's the whole decision. Pair either with a properly-dosed conditioner and you have a complete routine.