They are 2 different things actually, as reported in Honey. Honey lightening has been reported to lighten hair without reported damage. The research I posted there and in this thread, supports the no damage results.
The protective constituents in honey and honey lightening recipe ingredients, prevent oxygen free radicals from being formed, by chelating free iron, that starts the reaction that causes them, when peroxide reacts with other elements. These free radicals cause cell and hair damage.
These natural protective constituents are what reseach has shown to be effective against conventional peroxide damage, as pre treatments for cells and their chemical equivalents have been shown to be effective in protecting hair from damage, as pre treatments and when they are formulated into peroxide/bleaching products.
Conventional peroxide can damage cells and has been reported to damage hair. The amount of damage to hair, depends on the volume and time used on hair.
The mechanism(s) involved in lightening pigment by hydrogen peroxide are therefore separate. Honey lightening has been reported to be effective to lighten hair and there is no indication that formulating chemical chelants into conventional hair bleaching products, impedes product effectiveness, from the patent application quoted.
Serious damage from conventional peroxide used at high volumes over time, that has required the hair to be cut, has been reported as; weak, brittle, gummy, split hair, none of which as been reported as the result of honey lightening, no matter how long or often it has been done.
Henna can be very difficult to lighten under certain circumstances, and with conventional peroxide it can take time, although reportedly, less time time than honey lightening, depending on how light the goal.
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