Retinol for face used on body?

My body skin is still crinkly like a 90 year old's 2 years after losing a huge amount of weight in a short time.

I've done all I can within my budget and still doing it but nada works.

Has anyone used retinol that's supposed to go on the face on their body and had results? Mixed with oil or something?

I have one bottle left and it worked on my face and don't need it anymore. I don't want the purge all over my body.

(Also, I'm poor atm, so don't give me tips on procedures or spa treatments etc 😊)