v3.26.1
Cover
May 14, 2026
Cover [Abstract]  
Document Type 8-K
Document Period End Date May 14, 2026
Entity Registrant Name GRI BIO, INC.
Entity Incorporation, State or Country Code DE
Entity File Number 001-40034
Entity Tax Identification Number 82-4369909
Entity Address, Address Line One 2223 Avenida de la Playa
Entity Address, Address Line Two Suite 208
Entity Address, City or Town La Jolla
Entity Address, State or Province CA
Entity Address, Postal Zip Code 92037
City Area Code 619
Local Phone Number 400-1170
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.0001 per share
Trading Symbol GRI
Entity Emerging Growth Company true
Entity Ex Transition Period false
Entity Central Index Key 0001824293
Amendment Flag false