v3.26.1
ORGANIZATION AND BASIS OF PRESENTATION (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Dec. 01, 2025
USD ($)
$ / shares
shares
Sep. 09, 2025
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Sep. 08, 2025
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Aug. 07, 2025
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$ / shares
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Feb. 05, 2025
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$ / shares
shares
Nov. 03, 2024
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$ / shares
shares
Apr. 25, 2024
USD ($)
$ / shares
shares
Jun. 02, 2023
USD ($)
$ / shares
shares
May 20, 2022
USD ($)
shares
Apr. 28, 2022
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
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Dec. 31, 2024
USD ($)
$ / shares
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Dec. 31, 2023
USD ($)
shares
Jun. 16, 2023
USD ($)
$ / shares
ORGANIZATION AND BASIS OF PRESENTATION                              
Ordinary shares, par value | $ / shares                     $ 0.0001 $ 0.0001 $ 0.0001    
Proceeds from exercise of warrants                       $ 102,993 $ 38,960 $ 21,652  
ADS                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Entity Listing, Depository Receipt Ratio             1       1 1      
ADS | Representative Warrants                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Number of ADS to purchase warrants | shares                   169,302          
Exercise price | $ / shares                   $ 7.5          
Ordinary Shares | April Warrants                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Exercise price | $ / shares           $ 44.14                  
Aggregate amount of warrant | shares           651,380                  
Ordinary Shares | November Warrants                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Exercise price | $ / shares           $ 70                  
Aggregate amount of warrant | shares           651,380                  
IPO | ADS                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Number of shares issued | shares                   6,000,000          
Offering price | $ / shares                   $ 6          
Entity Listing, Depository Receipt Ratio                   1          
Gross proceeds from issuance                   $ 36,000          
Net proceeds from issuance                   $ 33,705          
Over-Allotment Option                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Net proceeds from issuance                     $ 49,350        
Over-Allotment Option | ADS                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Number of shares issued | shares                 772,091   340,909        
Gross proceeds from issuance                       $ 52,500      
Net proceeds from issuance                 $ 4,285            
Follow-on offering                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Offering price | $ / shares               $ 15              
Net proceeds from issuance                           28,200  
Gross proceeds before underwriting discount               $ 30,000              
Net proceeds before underwriting discount               $ 27,317              
Follow-on offering | Warrants                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Exercise price | $ / shares               $ 18              
Aggregate amount of warrant | shares               2,000,000              
Follow-on offering | ADS                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Number of shares issued | shares               2,000,000              
Follow-on offering | Ordinary Shares                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Number of shares issued | shares               2,000,000              
Ordinary shares, par value | $ / shares               $ 0.0001              
At-the-Market offering ("ATM")                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Net proceeds from issuance                       $ 28,971 $ 16,474 $ 26,988  
At-the-Market offering ("ATM") | ADS                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Number of shares issued | shares                       193,000 284,719 731,843  
Entity Listing, Depository Receipt Ratio                             1
Gross proceeds from issuance                       $ 29,867 $ 16,984 $ 28,608  
Net proceeds from issuance                       28,971 $ 16,295 $ 27,403  
Aggregate offering price                             $ 100,000
At-the-Market offering ("ATM") | Ordinary Shares                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Ordinary shares, par value | $ / shares                             $ 0.0001
Direct offering | ADS                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Number of shares issued | shares       230,770 258,309   651,380                
Entity Listing, Depository Receipt Ratio             1                
Gross proceeds from issuance       $ 15,000 $ 15,000   $ 25,000                
Net proceeds from issuance         $ 15,000   $ 24,811                
Exercise price | $ / shares       $ 65.00 $ 58.07                    
Aggregate amount of warrant | shares       230,770 258,309                    
Price per share | $ / shares       $ 65 $ 58.07   $ 38.38                
Warrant term       5 years 5 years                    
Potential additional proceeds of from the exercise of issued in the offering       $ 15,000 $ 15,000                    
Direct offering | ADS | April Warrants                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Exercise price | $ / shares             $ 44.14                
Aggregate amount of warrant | shares             651,380                
Warrant term             5 years                
Direct offering | Ordinary Shares                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Exercise price | $ / shares             $ 44.14                
Aggregate amount of warrant | shares             651,380                
Private placement in public equity financing                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Number of shares issued | shares   1,953,124                          
Offering price | $ / shares   $ 64                          
Gross proceeds from issuance     $ 125,000                        
Net proceeds from issuance                       $ 125,000      
Exercise price | $ / shares   $ 76.8                          
Aggregate amount of warrant | shares   1,953,124                          
Warrant term   2 years                          
Potential additional proceeds of from the exercise of issued in the offering     $ 150,000                        
Agreement For Exercise Of Warrants | April Warrants                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Exercise price | $ / shares           $ 44.14                  
Aggregate amount of warrant | shares           651,380                  
Proceeds from exercise of warrants           $ 28,752                  
Agreement For Exercise Of Warrants | November Warrants                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Exercise price | $ / shares           $ 70                  
Aggregate amount of warrant | shares           651,380                  
Warrant term           5 years                  
Proceeds from exercise of warrants           $ 45,597                  
Underwritten Public Offering | ADS                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Number of shares issued | shares 2,272,727                            
Entity Listing, Depository Receipt Ratio 1                            
Gross proceeds from issuance $ 350,000                            
Net proceeds from issuance $ 328,117                            
Price per share | $ / shares $ 154                            
Underwriters option period 30 days                            
Additional ADS | shares 340,909                            
Belite Bio Holdings Corp.("Belite Holding")                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Ownership interest (in percent)                     100.00% 100.00%      
Belite Bio, LLC("Belite USA") | Belite Bio Holdings Corp.("Belite Holding")                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Ownership interest (in percent)                     100.00% 100.00%      
RBP4 Pty Ltd("RBP4") | Belite Bio Holdings Corp.("Belite Holding")                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Ownership interest (in percent)                     100.00% 100.00%      
Belite Bio (HK) Limited("Belite HK")                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Ownership interest (in percent)                     100.00% 100.00%      
Belite Bio (Shanghai) Limited ("Belite Shanghai") | Belite Bio (HK) Limited("Belite HK")                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Ownership interest (in percent)                     100.00% 100.00%      
Belite Bio (Taiwan) Inc | Belite Bio (HK) Limited("Belite HK")                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Ownership interest (in percent)                     100.00% 100.00%      
Belite Bio (Swiss) AG | Belite Bio (HK) Limited("Belite HK")                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Ownership interest (in percent)                     100.00% 100.00%      
Belite Bio Japan Inc | Belite Swiss                              
ORGANIZATION AND BASIS OF PRESENTATION                              
Ownership interest (in percent)                     100.00% 100.00%