Jax Taylor dug into his own personal ‘Valley’ in public Thursday … pulling down his sweatpants to give his crotch a good scratch while out running errands.

The reality television star was spotted out and about in Los Angeles Thursday … and, he had an itch that he just couldn’t help but scratch, digging his fingernails into his pubis.

Check out the pic for yourself … Jax is really pulling those sweats down — not quite revealing his intimate parts — but showing skin that ain’t far from them either.

We recently caught up with Brittany … and, she told us that while her co-parenting relationship with Jax is improving, their relationship is still explosive — so, it’s not all patched up between the two.

In the most recent ‘Valley’ episode, Brittany told Jax not to kiss their son after he spent the night with a “disgusting” girl … another tense interaction between the pair.