Is it safe to use MG Chemicals Nickel Conductive Pen on a surface exposed to hand/skin touch?
Thanks for the extra information, I can see from the MSDS you linked that the solution seems to be nickel micro particulate suspended in a mix of volatiles; the acetone you mentioned, dimethyl carbonate, amyl methyl ketone &amp; propylene glycol monomethyl ether acetate.

As you mentioned, it would be ill advised to get this on you when wet, and you will need to try and avoid that in your construction. 

As for use of the dried product, there may be some limited residues in there, but the nickel is the main component as you have mentioned.

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I have a few concerns for this if you are intending using it for a product for other people to use:

1) Nickel is a known allergen to a number of people whom are sensitive to it (As alluded to in my comment) - so will not be suitable for all users.

2) As the nickel is dispersed as a suspension of particles, these particles may, or may not (Read:probably not), bond well to your substrate (the glove). This is a definite issue, especially with respect to a product seeing movement and abrasion, as these particles will be released, so will fall from the glove over time (contaminating the user and area with nickel particles and degrading performance over time). Since we have no data on the particulate size, there is a chance they could be inhaled, which is a potential health issue.

3) Related to point 2 - many metals possess some different properties and even increased toxicities when in particulate form, especially where inhaled. (Just to be aware of)

4) the nickel particles may change over time and react with things the gloves come into contact with (including the users skin) to form nickel compounds. Many nickel compounds and to be fair even nickel itself, is/are classified as carcinogens, and some are really bad.

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I could go on but essentially, it may work, but I would suggest that UNLESS its just a prototype and you are taking precautions like washing hands after use and not abusing the glove, its probably a bad idea.
Another thing to note is that nickel does not possess great conductivity. 

Silver would be a better choice IMO, but without seeing a product you intend to use its hard to say, and I would also say that using conductive pens is unlikely to result in a durable product. My suggestion would be to look at conductive thread / fabric, and weave the conductive thread through the glove fabric.