What Are Wet Wipes Made Of? Nonwoven Substrates, GSM and Formulas Explained

Every wet wipe specification comes down to three building blocks. Each one drives performance, cost and compliance:

Component	What it is	Main decisions
Substrate	A nonwoven fabric: fibres bonded into a sheet without weaving or knitting	Fibre blend, bonding process, GSM, texture (plain, pearl, mesh), sheet size
Liquid (lotion)	Mostly water plus functional ingredients	Cleansing / moisturising agents, preservative system, fragrance, active ingredients, liquid loading per sheet
Packaging	The flow-pack, lid, canister or sachet that stops the wipes drying out	Film structure, closure type, count per pack, artwork

The U.S. FDA describes cleansing wipes in the same way: sheets of fibres “such as polyester, polypropylene, cotton, wood pulp, or rayon”, moistened with water and ingredients such as cleansing and moisturising agents and preservatives (FDA).

Fibre	Type	Typical role in a wipe	Counts as plastic under EU/UK rules?
Polyester (PET)	Synthetic polymer	Adds strength and durability; common in cost-effective blends	Yes
Polypropylene (PP)	Synthetic polymer	Used in some substrates and bicomponent fibres	Yes
Viscose (rayon)	Regenerated cellulose	Softness and absorbency; the plant-based part of most blends	Not considered chemically modified per EU guidance
Lyocell	Regenerated cellulose	Strength and softness in plastic-free substrates	Not considered chemically modified per EU guidance
Cotton	Natural fibre	Premium, cloth-like feel	No, if no synthetic is added
Wood pulp	Natural cellulose	Absorbent, low-cost; key in dispersible / flushable sheets	No, but check any binder

The right-hand column follows the definition of “plastic” in the EU Single-Use Plastics Directive and the European Commission’s guidelines, which treat viscose and lyocell as regenerated cellulose that is not chemically modified. The UK’s wet wipes ban uses the same definition. A blend with even a small polyester share “contains plastic”. In the EU, packs of plastic-containing wet wipes must carry the harmonised “PLASTIC IN PRODUCT” marking (Implementing Regulation (EU) 2020/2151). In the UK they are being banned from consumer sale — see our UK ban guide.

Nonwovens are made in two broad steps: a loose fibre web is formed, then it is bonded so it holds together (EDANA). For wet wipes, three routes dominate:

Process	How it works	Typical wipes
Spunlace (hydroentanglement)	High-pressure water jets entangle a pre-formed web (often carded), with no chemical binder	Most baby, personal care, makeup and pet wipes
Airlaid	Short fibres, often wood pulp, are carried by air and deposited as a random web, then bonded (thermally, with binder, or both)	Thick, absorbent wipes; some cleaning wipes
Wetlaid	Fibres in a water slurry are laid on a screen, similar to papermaking, then bonded	Dispersible and flushable constructions (often combined with hydroentanglement)

When you assess a plastic-free claim, the bonding step is the one to check: a thermal binder or bicomponent fibre can add plastic to an otherwise cellulose web.

GSM (grams per square metre) is the weight of the substrate. A higher GSM usually feels thicker and stronger, and it also uses more fibre per sheet, so it costs more. There is no universally “correct” GSM. Thickness depends on fibre and process as well as weight, so the reliable method is to compare samples against a benchmark product your customers already like. Texture (plain, pearl-embossed, mesh) also changes how thick a sheet feels and how well it cleans.

For buyers, the key is to specify: GSM, sheet size, fibre blend and texture belong on the purchase specification, so every batch can be checked against the approved sample.

The liquid is mostly purified water, with ingredients chosen for the job. The table shows typical building blocks by category. Exact ingredients depend on the formula and the destination market.

Category	Typical functional ingredients	Regulatory note
Baby wipes	Mild cleansing agents, skin conditioners, preservative system; often fragrance-free	Cosmetic in the US, EU and UK when intended only for cleansing
Makeup remover / facial	Micellar or emollient cleansers, skincare additives	Cosmetic
Household cleaning	Surfactants, sometimes solvents, fragrance	Household / detergent rules; US CPSC for general cleaning wipes
Antibacterial / disinfecting	Alcohol or other active substances	Skin germ-killing claims are drugs in the US; surface disinfection is EPA (US) or biocides rules (EU/UK)
Pet wipes	Gentle cleansers, deodorising agents	See our pet wipes vs baby wipes guide

Preservatives are not optional extras: wipes are wet and are opened repeatedly, so the formula must stay protected against microbial growth for the whole shelf life. On labels, the FDA notes that “fragrance free” and “unscented” mean different things. “Unscented” products may contain masking fragrance, while “fragrance free” products should not contain added fragrance ingredients.

On a converting line, rolls of substrate are unwound, slit to width, folded, dosed with liquid, cut into sheets and stacked, then packed into flow-packs, canisters or sachets and sealed. Lids or stickers are applied, and the packs are cartoned. The quality points that matter to a buyer are the liquid loading (how wet each sheet is), the sheet count and dimensions, seal integrity (so the wipes do not dry out), and microbiological control of the liquid and environment.

LX Wipe does not run its own lines. We match your specification to a partner factory that specialises in the category and pack format, check production against your approved sample, and can arrange pre-shipment inspection. See how we vet partner factories.