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The Wet-White-Cloth Fabric Test: How To Avoid Dye Migration
Of everything a new owner could be told, this is the most vital, and it's the most often brushed aside. The process is called dye migration: dark fabric transfers colour onto the doll's skin, and after that it's permanent. A stain that's been absorbed into TPE is there for great, and there's no cleaning product, no method, no amount of scrubbing that removes it. Only prevention defends against it, and prevention starts with a simple test: two minutes of your time and nothing in cost.

Heat and Pressure Speed It Up
The reason this occurs is chemistry. Dark dyes are typically oil-soluble. TPE is oil-based. The dye migrates from the fabric into the TPE like water soaking into a sponge. A few hours in a warm room in a dark dress is enough to cause a permanent stain, because the process starts right away on contact and accelerates with heat and pressure. Dark marks on pale dolls are impossible to miss, which is why it's particularly visible on them, though it occurs on every skin tone to some degree.

Test From an Inside Seam
Running the test is uncomplicated. Clean water, and plenty of it, goes on a small piece of the fabric that you've taken, ideally from an inside seam where it won't be seen. Press the wet fabric firmly onto a white cloth, a cotton bud or a piece of kitchen paper and keep rubbing for about thirty seconds. If any colour transfers to the white cloth, the fabric will stain your doll, and you should not put it on her. The fabric is safe if the white cloth stays clean, and you can use it without worry.

Moisture Is the Trigger
Water stands in for the moisture that's naturally present on the doll's skin, which activates the dye transfer, and that's why the test uses it. Dry-on-dry transfers less dye than wet-on-damp, which is why testing with water gives you a worst-case scenario, precisely what you want. Normal use is safe for fabric that passes the water test. When it fails it will stain, and there's no way round it.

No Excuse for Skipping It
A brand you've used before doesn't get you out of it; the test is repeated for every new piece of clothing. A fabric that was safe last year might not be safe this year, because manufacturing processes change and dye batches vary. Permanent dark marks on her thighs are the alternative to a doll that looks good for years, and the test that decides it takes two minutes. The purchasers who end up buying replacement dolls are the ones who learn this the hard way, and there's no excuse for skipping the test.

Neon Colours Are Risky Too
Expect failures from dark colours, cheap dyes, and anything with an a little waxy or coated feel. Concentrated, oil-soluble dyes: that's what black, dark red, dark blue and dark purple are dyed with, and why they're the worst offenders. The large amounts of pigment in bright neon colours make them hazardous too. With cheaply dyed fabric more likely to bleed than properly dyed fabric, pricey clothing is often the safer bet, even though the difference isn't guaranteed.

When in Doubt, Pre-Wash
Three types of fabric are safest: light colours, natural fibres, and pre-washed pieces. White, cream, beige, and pale pastels are nearly always safe, because there's not enough pigment to cause noticeable staining. Synthetics let go of dye more easily than cotton, linen and other natural fibres, which tend to hold it more firmly and so bleed less. Most of the excess dye has gone from pre-washed fabric, which makes it less likely to transfer onto the doll. Doubtful about a piece? Pre-wash it before putting it on the doll.

Washing in Hot Water With White Vinegar
Before you bin a fabric that fails the test, there are a few things you can attempt. Wash it a number of times in hot water, adding a small quantity of white vinegar; this can help set the dye and reduce bleeding. Overnight soaking in a saltwater solution helps too, with the salt working as a mordant to bind the dye to the fibres. Even so, no method here invariably works, and some fabrics will bleed whatever you do, yet it's worth trying if you truly want to use a precise piece of clothing.

Neither Is Foolproof
Not using it is the safest alternative if a fabric still fails after washing. Replacing a piece of clothing costs far less than a new doll, and a stain on a doll is permanent.Love the piece too much to bin it? A few mitigation strategies exist. The first approach is lining the clothing's inside with light-coloured fabric to produce a barrier between the dark dye and the doll's skin. You could instead use the clothing for short durations only and remove it straight away after use. Foolproof they're not, but they do lessen the risk.

Acquire From Sellers Who Understand Dye Migration
For buyers who are buying clothing for a doll, the safest approach is to purchase from retailers who grasp dye migration and have tested their fabrics. Generally aware of the issue, doll-specific clothing brands select their fabrics accordingly, and that's why their clothing is more costly but also more reliable. A gamble is what you're taking with generic clothing from high street shops, and the cheaper it is the higher the risk. Test any generic clothing you acquire before use, without exception.

Storing a Doll in a Warm Room
A seasonal factor is also worth knowing about. Heat speeds the process up, which is why dye migration is worse in warm weather. There's a risk that a fabric passing the test in winter fails in summer, especially when the doll is stored in a warm room. Consider washing new clothing several times before use, and test it more fully, if you're buying it in summer. Heat will cause any residual dye to migrate faster, so the same applies if you're storing a doll in a warm room.

What a Dye Migration Stain Looks Like
Worth understanding is the stain itself, if it takes place. Ordinarily diffuse rather than sharp are dye migration stains, as the dye spreads through the material instead of sitting on the surface. A clear outline of the fabric it isn't; it's a general darkening or discolouration of the region. Spotting it early is harder; over time it becomes more apparent as the stain spreads and deepens. When it's set, it's set: it can't be removed, so the only choices are to cover it with clothing or accept it as part of the doll's history.

Staying away from False Results
The testing technique is as vital as the test itself. Cut the rubbing short and you might miss a slow bleed, so don't skimp on the thirty seconds. Don't go effortless. Rub firmly, stain-removal style, because the fabric will experience that kind of pressure against the doll's skin. One section of the white cloth per test, because a cloth that's already soiled from a previous test will give a false result. A dry test would miss it, because water is what activates the dye transfer; test the fabric wet.

Don't Trust the Light Areas
The darkest section comes first when you're testing a fabric with multiple colours. Light sections might pass while dark ones fail, and the dark sections are what will stain the doll. Test each colour separately if you're not sure, and be particularly diligent with fabrics that have dark patterns on a light background, because the dark parts are the ones that bleed.

There's No Safe Exposure Time
Contact time is the next question: how long before a fabric stains the doll? The answer is that it varies massively, and it depends on the fabric, the temperature, and the pressure. Some stain within an hour; others take days or weeks. A failed fabric is a future stain, as far as the safest approach goes, so avoid it totally. Safe exposure time doesn't exist for a bleeding fabric, since each bleed adds up and can't be undone.

Factor the Cost of Covering Stains Into the Price
Customers of a used doll should check for dye migration before purchase. The thighs, back and buttocks are the most usual regions for staining, so look for dark patches there. Because the stains are permanent and affect the doll's appearance, a doll with apparent dye stains is worth less than one without. Haggle: the cost of covering the stains (with clothing or a new body) should be factored into the cost of a used doll with stains, and full cost shouldn't be paid.

The Five Minutes That Could Cost You a Doll
The single most critical maintenance habit any doll owner can develop is the wet-white-cloth test. You'll spend two minutes and no money, and in return the most common cause of permanent damage is stopped. Make it part of your routine, test every new piece of clothing, and don't skip it because you're in a hurry. The five minutes saved by skipping the test could end up costing you a doll. More info at this rosslink. Also check out see page alongside all sites and resource for more.
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