Before Any Chemical Touches a Wig: The Safety Checklist

Almost everything that goes badly wrong with a wig involves a chemical: bleach for the knots, dye for colour, adhesive for the lace, remover for the adhesive. None of it is dangerous when handled properly. All of it can burn skin, damage eyes, or trigger a serious allergic reaction when it isn't.

This guide is the prevention side. The technique guides on this site tell you how to do these things; this one tells you how not to get hurt doing them.

The pre-work checklist

Run this every single time, even when you've done it before. Familiarity is when people skip steps.

Never mix these

This is the section that matters most, because the consequences are immediate and can be severe.

• Bleach products and ammonia-based products. Combining chlorine bleach with ammonia produces chloramine gas, which damages the lungs. Household bleach has no place anywhere near wig work in the first place — hair bleach is a different product entirely — but people occasionally reach for it to "clean" something. Don't.
• Two different colour or lightening systems. Products are formulated to work as a set. Mixing brands or mixing a developer with a product it wasn't designed for gives unpredictable strength and timing.
• Leftover mixed bleach, stored. Bleach and developer start reacting the moment they're combined and release gas. Sealing that in a container can make it burst. Mix what you need, use it, discard the rest.
• Adhesive remover near an open flame. Many are solvent-based and flammable. No candles, no smoking, no gas hob.

Ventilation and skin protection

• Ventilate properly. A cracked window in a small bathroom is not ventilation. Open a window fully, or work in the largest room you have with air moving through it.
• Gloves, always. Bleach and dye cause chemical burns on skin, and repeated exposure is how people develop sensitivity to products they used safely for years.
• Keep everything off your skin. If bleach or dye touches skin, rinse it off immediately with plenty of cool water. Don't leave it because you're mid-application.
• Never apply bleach to a wig you are wearing. This is worth stating plainly. The techniques in the customising guide are done on a mannequin head. Bleach against your scalp is a chemical burn waiting to happen, and your scalp is not a wig — it doesn't get a second chance.

The stop-immediately signs

During or after any chemical work, these mean stop and act:

• Burning, stinging or intense heat on skin — rinse with plenty of cool running water immediately, for at least 15 minutes
• Anything in the eye — flush with cool water for 15–20 minutes, holding the eyelid open, then seek medical attention. Don't rub
• Difficulty breathing, wheezing, or a tight chest — get to fresh air immediately and call emergency services if it doesn't settle quickly
• Swelling of the face, lips, tongue or throat — this is a medical emergency. Call emergency services
• A spreading rash, hives, or blistering — stop, wash the area, and seek medical advice
• Feeling dizzy, nauseous or getting a headache while working — that's usually inadequate ventilation. Stop and get fresh air

None of this is meant to be alarming — it is meant to be boring, in the way a fire exit sign is boring. Read it once, and you'll recognise a problem early enough for it to stay small.

Product-specific cautions

Hair bleach and developer

• Use 20 volume developer for knots. 30 and 40 volume lift faster, generate more heat, and are how people burn skin and dissolve knots
• Mix in a non-metal bowl — metal reacts with the product
• Never leave mixed bleach unattended near children or pets
• Bleach continues working until it is fully rinsed out. "Time's up" means rinse now, not in five minutes

Hair dye

• Many permanent dyes contain PPD (paraphenylenediamine), one of the more common causes of severe allergic contact dermatitis. Reactions can develop suddenly in someone who has used dye for years
• Patch test every time, not just the first time
• Never use a dye product on eyebrows or eyelashes. This can cause serious eye injury, and dyes state it explicitly for good reason

Adhesives and removers

• Patch test on the inner forearm 24–48 hours ahead
• Never apply to broken, irritated or sunburned skin
• Use a scalp protector barrier between skin and adhesive where you can
• Remove with proper remover and patience, never by pulling
• Keep solvent-based removers away from flame and away from eyes

Heat tools

• Never use a heat tool near alcohol-based products or hairspray that hasn't dried — several are flammable
• Unplug when you finish. A hot iron left on a bed or a carpet is a genuine fire risk
• Test temperature on a hidden section at the nape before working on the visible hair

Storage and disposal

• Keep all chemicals in their original, labelled containers — decanting into unmarked bottles is how accidents happen
• Store out of reach of children and pets, somewhere cool and dark
• Never store mixed product
• Dispose of leftovers down a drain with plenty of running water, and rinse the container before binning it
• Check expiry dates. Old developer loses strength unpredictably, which leads people to over-process compensating for it

The honest recommendation

Every one of these processes can be done by a professional, and for a first attempt that is genuinely worth the money — you get the result you wanted, you don't ruin a unit learning, and nobody gets hurt.

If you do work at home, the cheapest safety measure available is buying a unit that's already pre-bleached, pre-plucked and in the colour you want. That removes the need for most of this page.