Method for liquefying a feed gas stream, said feed gas comprising hydrogen or helium, the method comprising the steps of: - providing a feed gas stream comprising the feed gas, wherein said feed gas stream has an initial temperature, - precooling said feed gas stream from said initial temperature to an intermediate temperature in a precooling step yielding a precooled feed gas stream, - cooling said precooled feed gas stream from said intermediate temperature to a temperature equal to or below the boiling temperature or the critical temperature of said gas, wherein • said precooled feed gas stream is cooled to said temperature equal or below the boiling temperature or the critical temperature of said gas in a first cooling step with a first refrigerant stream, wherein said first refrigerant stream is expanded, thereby producing cold, or • said precooled feed gas stream is cooled to a first temperature in a first cooling step with a first refrigerant stream, wherein said first refrigerant stream is expanded, thereby producing cold, and said cooled feed gas stream is further cooled from said first temperature to said temperature equal to or below the boiling temperature or critical temperature of said gas in a second cooling step with a second refrigerant stream, wherein said second refrigerant stream is expanded, thereby producing cold, wherein said first refrigerant stream and/or said second refrigerant stream comprises or consists of a refrigerant composition comprising neon and hydrogen. - providing a feed gas stream comprising the feed gas, wherein said feed gas stream has an initial temperature, - precooling said feed gas stream from said initial temperature to an intermediate temperature in a precooling step yielding a precooled feed gas stream, - cooling said precooled feed gas stream from said intermediate temperature to a temperature equal to or below the boiling temperature or the critical temperature of said gas, wherein • said precooled feed gas stream is cooled to said temperature equal or below the boiling temperature or the critical temperature of said gas in a first cooling step with a first refrigerant stream, wherein said first refrigerant stream is expanded, thereby producing cold, or • said precooled feed gas stream is cooled to a first temperature in a first cooling step with a first refrigerant stream, wherein said first refrigerant stream is expanded, thereby producing cold, and said cooled feed gas stream is further cooled from said first temperature to said temperature equal to or below the boiling temperature or critical temperature of said gas in a second cooling step with a second refrigerant stream, wherein said second refrigerant stream is expanded, thereby producing cold, wherein said first refrigerant stream and/or said second refrigerant stream comprises or consists of a refrigerant composition comprising neon and hydrogen. • said precooled feed gas stream is cooled to said temperature equal or below the boiling temperature or the critical temperature of said gas in a first cooling step with a first refrigerant stream, wherein said first refrigerant stream is expanded, thereby producing cold, or • said precooled feed gas stream is cooled to a first temperature in a first cooling step with a first refrigerant stream, wherein said first refrigerant stream is expanded, thereby producing cold, and said cooled feed gas stream is further cooled from said first temperature to said temperature equal to or below the boiling temperature or critical temperature of said gas in a second cooling step with a second refrigerant stream, wherein said second refrigerant stream is expanded, thereby producing cold,