Yes, ABSINTHES is a Scrabble word!

Letter values in Scrabble US: A 1, B 3, S 1, I 1, N 1, T 1, H 4, E 1, S 1.

Is it a valid word?

ABSINTHES is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

aromatic herb of temperate Eurasia and North Africa having a bitter taste used in making the liqueur absinthe
strong green liqueur flavored with wormwood and anise

Also: common wormwood, old man, lad's love, artemisia absinthium.