Abu Ubayd (may Allah have mercy on him) said: A woman would prick the back of her hand or her wrist with a needle, making a wound, and then fill it with kohl or powder, and it would turn green.
'Al-taflij' is to make the teeth thin and sharpen them so that their edges become thin, as they are in youth. An old woman does this to resemble young girls. This is the meaning of the words of Abu Ubaydah (may Allah have mercy on him) and Abu Ubayd (may Allah have mercy on him).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب القسم والنشوز / 14835