How to Say "lighten" in Spanish
The Spanish word for “lighten” is “aclarar” — B1 level.
English → SpanishB1
verbB1
to make a color less dark

Examples
Ella va a la peluquería para aclarar su cabello.
She is going to the hair salon to lighten her hair.
Después de la lluvia, el cielo empezó a aclararse.
After the rain, the sky began to brighten (become clearer).
Añade un poco de blanco para aclarar la pintura.
Add a little bit of white to lighten the paint.
The Reflexive Form ('Aclararse')
When things change color or light on their own (like the sky or hair), use the reflexive form 'aclararse.' Think of it as 'the sky clarifies itself.'
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