Iris lightening? From brown to green /:?

Hey has anyone heard of the iris lightening technique? By using msm (methyl sulfanyl methane) and AA (alpha arbutin). Technically it should work as they both are pigment 'changer' or lightners. Anyone whose heard of or tried this please please tell me!!!! I'm about to try it and rather not waste my time. If it wont work My eyes a a daaaark brown and I'd love to have greenish or even golden brown eyes. Thanks x