Yes, -none will be effective. In a mather of fact, it will be effective even after one wash in 40 grad.Celsius. It will take about one week to fade (without washing) on wool, and approximately two weeks on a catton. Oil based fades faster.
But, after three days NPA on a sweater You can not say right useful ammount of it. Like, say, You will put 2 dabs of NPA today, after two days it will not as effective as 2 dabs.
Right, folks?
Fade depends of kind of material, humidity of the air, temperature, clothes You whearing over it, clothes You whearing under this, time on a sunlight, etc.
Yours, Bubu
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