Why didn't Ichigo ever go back to his full hollow form after

How is Ichigo from the anime 'Bleach' half hollow? - Quora

Is this image of Ichigo's Hollow evolution correct? : r/bleach

If Ichigo's katana was always a Quincy weapon, then why can he use a Bankai? - Quora

Why didn't Ichigo ever go back to his full hollow form after fighting ulquiorra? - Quora

What's the Deal With Ichigo's 'VASTO LORDE' Hollow Form?

How strong is Ichigo Full Hollow (Vasto Lorde)? - Quora

The forgotten (Bleach fanfiction) - A zanpakuto, a hollow and Ichigo?!?!?!?! Revealed - Wattpad

Gear 5 Luffy (One Piece) Vs Fully-Hollowed Ichigo (Bleach)

Something I never understood about HoS. Is why Ichigo needed to use external power to wake up White. Couldn't he just speak to his hollow to help him Hollowfy since Ichigo doesn't

If he really wanted to protect Ichigo, then why did he do this to him? : r/bleach

Why Did Ichigo Stop Using His Mask After He Got His Shinigami Powers Back?

Why didn't Ichigo ever go back to his full hollow form after fighting ulquiorra? - Quora

So, Why DOESN'T Ichigo Use His HOLLOW MASK Anymore?