Used to / Didn't use to

(solía / no solía) (pasado)
 

Positive		Negative
I	used to wear glasses.	I	didn't use to wear glasses.
You		You
He		He
She		She
It		It
We		We
They		They

 

Questions			Positive			Negative
Did	I	use to wear glasses?	Yes,	I	did.	No,	I	didn't.
	you			you			you
	he			he			he
	she			she			she
	we			we			we
	they			they			they

Use used to / didn't use to + infinitive for things that happened repeatedly or over a long period of time in the past, but are usually not true now, for example for things which happened when you were a child.

You can also use the Past Simple here. I had a long hair when I was a child.

!!!!
Used to only exists in the past. Don't use use to for the present habits.
Use the present simple + usually. I usually cook in the evenings.