It can be used daily and is often combined with other brightening ingredients
This is technically purer than most commercial serums, but carries two risks: no preservative (bacterial growth on open wounds) and no pH buffering (the solution may be too acidic or alkaline)
As an electrophilic chemical, ITCs might react covalently with the thiol groups of (proteins and) glutathione in plants, similar to what has been demonstrated in different in vitro systems 38,77,78 as well as in insects feeding on GSL or ITC diets 79,80
People on heavily restricted diets may also experience vitamin B12 deficiency
The truth is the results are not permanent
How Its Made (No Preservatives) Sterile water is produced by distillation or reverse osmosis and then sterilized, typically by autoclaving, to eliminate microbial contamination