Question 1) Pulling out a grey hair on Shabbos, ok?

Question 2) What about tweezing eyebrows?

Question 3) How about pulling a hair from a fur coat?

Question 4) Removing feathers from a cooked chicken??

Question 5) Is it always OK to comb hair on Shabbos?

Question 6) How can you remove nits on Shabbos?
Gum?!

This "melacha" is the first in a group of 13 that comprises the essential steps in the processing of wool fabrics and garments.
Shearing the wool of a sheep is the 1st stage in the manufacture of woolen garments.

It can be *defined as the severing or uprooting of any growing part of the body of any creature*, even one no longer alive.

Also included is *cutting or tweeting hair from one's head or body.*
Even cutting a single hair is this "melacha".
Biting or pulling out hair is also prohibited.
*Tweezing eyebrows or other excess hair or using a hair remover isn't ok.*

As a dead animal is included in this "melacha" you can't pull a hair from a natural fur.

But, it's *ok to remove feathers from a cooked chicken* for various reasons, including that the cooking causes the feathers and hair to loosen their grip and come off easily, therefore they are considered "flicked" through the cooking.

*Cutting or brushing hair is this "melacha", as it will inevitably pull out hair.*

In order to *brush hair in a permissable* way;
1) use a *soft bristle brush* as the bristles usually bend.
2) use in a *gentle way*.
3) designate a *special shabbos brush* (due to a different issue).

However if someone knows their hair will come out no matter what, this wouldn't help.

*Nits* would appear to be a similar issue. The way to deal with this is to remove them *without any comb in a gentle way so it's not being tugged from its roots.*
This can be done by gently grasping the long strand of hair with one's thumb and forefinger, between the root and the knit while sliding the nit upwards and out of the hair with the thumbnail and forefinger of another hand.
Additionally, shampoos should not be used.

What would you say about *removing gum* from hair?!

It can't be forcibly pulled out as it will definitely cause hair to be pulled out.
Possible solution is to apply *ice to the spot where the gum is embedded which usually causes the gum to harden and lose some of its stickiness and after a couple of minutes should slide off without pulling hair!* A few drops of oil could accomplish the same result.

And.. what about removing a bandaid/plaster from male skin?!

Try using oil or nail polish remover to devolve the adhesive. Otherwise leave plaster on till after Shabbos.

*Cutting or removing fingernails or toenails is a problem*, or even a part of a nail.

Similarly, one shouldn't remove a wart, a pimple or even loose bits of dried skin.