Inventor

LANG GUENTHER

DE42 patents

⚠️ This page may combine multiple inventors who share the name “LANG GUENTHER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LANG GUENTHER

WELLA AG

Macromolecular, surface-active, quaternary, N-substituted chitosan derivatives as well as cosmetic composition based on these new chitosan derivatives

Cosmetic agent on the basis of quaternary chitosan derivatives, novel quaternary chitosan derivatives as well as processes for making same

Aqueous hair fixing composition containing a water-soluble hair fixing polymer and a thickener

Cosmetic composition based upon chitosan derivatives, new chitosan derivatives as well as processes for the production thereof

Hair shaping method using acidic aqueous intermediate rinse to prevent overcurling

Hair fixing composition in the form of an aqueous solution, foam or gel

Method of skin care using a skin care preparation containing a betaine ester and an α-hydroxy acid

O-benzyl-N-hydroxyalkyl derivatives of chitosan and nail polish containing the same

Cosmetic compostions based upon N-hydroxybutyl-chitosans, N-hydroxybutyl-chitosans as well as processes for the production thereof

Cosmetic composition based upon N-hydroxypropylisopropylether chitosans as well as new N-hydroxypropylisopropylether derivatives of chitosan

Process for making quaternary chitosan derivatives for cosmetic agents

Quaternary hydroxy-propyl-substituted chitosan derivatives, cosmetic compositions based thereon and processes for the production thereof

Process for the permanent deformation of hair

Method and agents for permanently styling hair, with a base consisting of N,N-disubstituted mercaptoacetamides

Hair care composition in the form of a microemulsion

Method for permanently shaping hair

Storage-stable pearlescent hair-conditioning compositions

Hydrolytically cleavable active ingredient derivative compounds, hair treatment compositions containing them and hair treatment methods

Composition for fixing hair based on lignin or lignin derivatives as well as dihydroxypropyl lignin

Means for the aftertreatment of permanently deformed hair

Use of reductive compounds for strengthening and improving the structure of materials containing keratin

Methods and compositions for permanent shaping of hair

Hair keratin-reducing cysteine esters and compositions for permanent shaping of hair based on same

Hair keratin-reducing mono, di- and triglycerides of cysteine and compositions

Cosmetic composition based upon chitosan and ampholytic copolymerizates, as well as new chitosan/polyampholyte salts

Quaternary hydroxyethyl-substituted chitosan derivatives, cosmetic compositions based thereon and processes for the production thereof

Agent and method for permanent shaping of hair and method for the production of N-alkylmercaptoacetamides

Hair shaping compositions containing mercaptoethylamines and methods for the permanent shaping of hair using same

Preserved hair and body treatment compositions and use of a preservative combination

Composition for the strengthening of the hairdo and the care of hair

Cosmetic compositions on the basis of alkyl-hydroxypropyl-substituted chitosan derivatives, new chitosan derivatives and processes for the production thereof

Pearlescent hair conditioning composition

Use of flower wax in liquid hair-treatment agents

Process and means for permanent hair-styling

Hair dyeing compositions containing 2,6-dinitro-phenol-derivatives

Agent and method for permanently shaping the hair, based on n-branched-chain alkyl-substituted mercapto acetamides and process for their preparation

Method and agents on the basis of 2-mercaptopropionic acid amides for durable hair forming and a method for producing same

Agent and process for permanent hair wave based on mercaptoacetamides

Permanent process and agent

WELLA AKTIENGSELLSCHAFT

Cosmetic composition for treating skin and hair containing apple wax and methods of making them

Cosmetic compositions based upon n-hydroxypropyl-chitosans, new n-hydroxypropyl-chitosans, as well as processes for the production thereof

WELLA AKTIENGESELLCHAFT

Composition and method for permanent shaping of hair