Skins of dry hands, not his ultimately (10)

I haven't cracked this one yet — but the brilliant team at Times for the Times have:

PARCH (dry) MEN (hands) + last letters of NOT HIS This was my third-to-last in. I feel embarrassed to have not seen it sooner. PARCH means ‘to make dry’, and obviously ‘dry’ means ‘to make dry’, but somehow I don’t think of these meanings as synonymous. I think of PARCH as ‘to dry out’, whereas ‘dry’ means ‘to un-wet something’. Am I crazy? Perhaps.