The Procter Gamble Company

John Scott Park

Barry Stoddart

Janice Jeffrey

Jennifer Mary Marsh

Gerard Marcel Baillely

Michael Andrew Olshavsky

Henry Drummond Boswell

Valerio Del Duca

Marina Trani

Taher Iqbal Yousaf

Fiona Susan MacBeath

Dario Rapisarda

Elizabeth Ann Shaw

The present invention relates to hair care compositions comprising an oxidizing agent and chelants having ratio calculated at pH 10 of at least 3.20 wherein log Kis the common logarithm of the Conditional Stability Constant of said chelant with Cuand log Kis the common logarithm of the Conditional Stability Constant of said chelant with Ca. Suitable chelants are diamine-N,N'-dipolyacids or monoamine monoamide-N,N&#x2032;-dipolyacids. The compositions according to the present invention contribute to reducing the oxidative damage sustained by a keratinous fiber such as hair during bleaching, dyeing, perming or other oxidative treatments. Especially preferred diamine dipolyacid is ethylenediamine-N,N&#x2032;-disuccinic acid (EDDS).

Compositions suitable for the treatment of hair comprising chelants and methods for reducing oxidative hair damage

The present invention relates to hair care compositions comprising chelants and methods for reducing oxidative hair damage. The compositions contribute to reducing the oxidative damage sustained by keratinous fibers such as human hair during bleaching, dyeing, perming or other oxidative treatments. The compositions according to the present invention also provide excellent color evenness and color fastness.

Oxidative treatment of hair with reduced hair damage

Detergent compositions comprise a water-soluble builder, an enzyme and a polymeric dye transfer inhibiting agent, wherein a means is provided for delaying the release of the enzyme relative to the release of the water-soluble builder to the wash solution. The time to achieve a concentration that is 50% of the ultimate concentration of the water-soluble builder is less than 60 seconds, and the time to achieve a concentration that is 50% of the ultimate concentration of the enzyme is more than 90 seconds.

Detergents containing a builder and a delayed released enzyme

Detergents containing a heavy metal sequestrant and a delayed release

Laundry pretreatment with peroxide bleaches containing chelators for

Machine dishwashing compositions containing an oxygen bleach and a

Detergents containing a surfactant and a delayed release peroxyacid

There is provided a rinse aid composition containing an organo aminophosphonic acid or its salts or complexes. The pH of said composition as a 1% solution in distilled water at 20.degree. C. is preferably less than 7.

Rinsing compositions

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Tyne and Wear, United Kingdom

John Scott Park