Why did trunk's ssj hair style change at the end of the cell saga

Did toriyama foret about trunks hair cut? He literally got it cut

Why does Super Saiyan's transformation only change their hair

In DBGT, why did everyone's hair style change? • Kanzenshuu

Toriyama's art style changing over time with SSJ • Kanzenshuu

Future Trunks (Character) - Comic Vine

Future Trunks, Super DBZ Fanon Wiki

I'm not sure if this a stupid question but anyone ever noticed

Why does Trunks hair suddenly become blue in Dragon Ball Super

Ahmed Ranks: Top 15 Dragonball Sagas, by Ahmed Al-Sheikh

Why did Toriyama change the design of the Super Saiyan? • Kanzenshuu

Why did trunk's ssj hair style change at the end of the cell saga

Trunks, Dragon Ball Wiki