wherein Ra and Rb are independently selected from the group consisting of H and saturated or unsaturated, iso› meric or non-isomeric, straight, branched, or cyclic Cl-C25 alkyl, aralkyl, or aryl groups, wherein Ra may be optionally substituted with an F, Cl, Br, I, OH, CHO, COOH, or alkoxy group having 1 to 9 carbon atoms; 

wherein the aliphatic carboxylic acid is selected from the group consisting of formic acid, acetic acid, propionic acid, butyric acid, butyric acid, caproic acid, caprylic acid, nonanoic acid, capric acid, !auric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, octacosanoic acid, oleic acid, linoleic acid, alpha› linolenic acid, arachidonic acid, eicosapentaenoic acid, docosahexaenoic acid, erucic acid, valproic acid and 12-hydroxy stearic acid; 

wherein the dicarboxylic acid is selected from the group consisting of oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, dodecanedioic acid, brassylic acid, thapsic acid, 14-methylnonacosanedioic acid, 14, 15-dimethy ltriacontanedioic acid ( C30) undecy lenic acid, maleic acid and fumaric acid; wherein the carbon atom skeleton of the branched dicarboxylic acid is sub› stituted with at least one group selected from the group consisting of R, F, Cl, Br, OH, OR, SH, CHO, COOH, and NRaRb, and wherein R, Ra and Rb are indepen› dently selected from the group consisting ofH, saturated or unsaturated, isomeric or non-isomeric, straight, branched, or cyclic Cl-C25 alkyl, aralkyl, or aryl groups; 

wherein the branched dicarboxylic acid is selected from the group consisting of aspartic acid, alpha-ketoglutaric acid, adipic acid 2-amino, aconitic acid, benzene dicar› boxylic acid, citramalic acid, citric acid, cystathionine, glucuronic acid, glutamic acid, itaconic acid, malic acid, mucic acid, oxalacetic acid, diamino pimelic acid, sac› charic acid, dimethyl succinic acid, tartaric acid and tartronic acid; 

wherein the carboxylic acid is selected from the group consisting retinoic acid, isotretinoin, ascorbic acid, isoascorbic acid, ethanesulfonic acid, glycerophospho- ric acid, acetohydroxamic acid, aconitic acid, alpha› ketocaproic acid, aminomalonic acid, hippuric acid, hydrochloric acid, methanesulfonic acid, oxalic acid, phosphoric acid, sorbic acid, iminodiacetic acid and car- nitine; and 

wherein the amino acid is selected from the group consist› ing of glycine, alanine, valine, leucine, isoleucine, serine, threonine, cysteine, methionine, aspartic acid, asparagine, glutamic acid, glutamine, arginine, lysine, histidine, phenylalanine, tyrosine, tryptophan, praline, B-alanine (3-alanine ), 4-aminobutyrate (GABA), 3-cy› anoalanine (B-cyanoalanine ), 2-aminobutyric acid, 2-methylene-4-aminobutyric acid, 3-methylene-4-ami› nobutyric acid, 2-aminoisobutyric acid, 5-aminole› vulinic acid, 2-amino-4-methylhexanoic acid (homoiso› leucine ), 2-amino-4-methylhex-4-enoic acid, 2-amino- 4-methylhex-5-ynoic acid, 2-amino-3-methylpentanoic acid, 2-aminoadipic acid, 4-ethylideneglutamic acid, 3-aminoglutaric acid, 2-aminopimelic acid, N4-ethylas› paragine, N4-methylasparagine, erythro-4-methyl› glutamic acid, 4-methyleneglutamic acid, 4-methylene› glutamine, N5-methylglutamine, N5-ethylglutamine (theanine), N5-isopropylglutamine, 2-amino-4-(ami› noxy)butyric acid (canaline), 2,4-diaminobutyrate, N4-acetyl-2,4-diaminobutyrate, N4-lactyl-2,4-diami› nobutyrate, N4-oxalyl-2,4-diaminobutyrate, 2,3-diami- 

nopropionic acid, N3-acetyl-2,3-diaminopropionic acid, N3-methyl-2,3-diaminopropionic acid, N3-ox› alyl-2,3-diaminopropionic acid, N6-acetyllysine, N6-methyllysine, N6-trimethyllysine (laminine), orni› thine (2,5-diaminopentanoic acid), saccharopine (N6- (2’-glutamyl)lysine, 2,6-diaminopimelic acid, N4-(2- hydroxylethyl)asparagine, erythro-3-hydroxyaspartic acid, 4-hydroxyarginine, 4-hydroxycitrulline, threo-4- hydroxyglutamic acid, 3,4-dihydroxyglutamic acid, 3-hydroxy-4-methylglutamic acid, 3-hydroxy-4-meth› yleneglutamic acid, 4-hydroxy-4-methylglutamic acid, 4-hydroxy-glutamine, N5-(2-hydroxyethyl)glutamine, 5-hydroxynorleucine, threo-4-hydroxyhomoarginine, homo serine, O-acetylhomoserine, O-oxalylho› moserine, O-phosphohomoserine, 4-hydroxyisoleu› cine, 5-hydroxymethy lhomocysteine, threo-3-hydroxy- leucine, 5-hydroxyleucine, 2-hydroxylysine, 4-hydroxylysine, 5-hydroxylysine, N6-acetyl-5-hy› droxylysine, N6-trimethyl-5-hydroxylysine, 4-hy› droxyomithine, mimosine, 4-hydroxynorvaline, 5-hy› droxynorvaline, 2-amino-4,5-dihydroxypentanoic acid, 2-amino-4-hydroxypimelic acid, 4-hydroxyvaline, O-acetylserine, O-phosphoserine, pipecolic acid, (pip› eridine-2-carboxylic acid), 3-hydroxypipecolic acid, trans-4-hydroxypipecolic acid, trans-5-hydroxypipe› colic acid, 5-hydroxy-6-methylpipecolic acid, 4,5-dihy- droxypipecolic acid, trans-3-hydroxyproline, trans-4- hydroxyproline, trans-4-hydroxymethylproline, azetidine-2-carboxylic acid, N-(3-amino-3-carboxypro› pyl)azetidine-2-carboxylic acid, 4,5-dehydropipecolic acid (baikiain), 3-amino-3-carboxypyrrolidone (cucur- bitine ), 2-( cyclopent-2’-enyl)glycine, 5-hydroxytryp› tophan, albizziine (2-amino-3-ureidopropionic acid), arginosuccinic acid, canavinosuccinic acid, citrulline, homoarginine, homocitrulline, indospicine, O-ure› idohomoserine, 6-hydroxykynurenine, 3-( 4-aminophe- nyl)alanine, 3-(3-aminomethylphenyl)alanine, 3-(3- carboxyphenyl)alanine, 3-carboxytyrosine, 3-(3- hydroxymethylphenyl)alanine, 3-(3-hydroxyphenyl) alanine, 3-(3,4-dihydroxyphenyl)alanine (L-DOPA), 2-(phenyl)glycine, 2-(3-carboxyphenyl)glycine, 2-(3- carboxy-4-hydroxyphenyl)glycine, 2-(3-hydroxyphe› nyl)glycine, 2-(3,5-dihydroxyphenyl)glycine, 4-ami› nopipecolic acid, guvacine, 2-amino-4-(isoxazolin-5- one )-2-yl)butyric acid, lathyrine, tetrahydrolathyrine and omithin and dimers or oligomers thereof. 

22. The foamable waterless composition of claim 20, wherein the modulating agent is a nitrogen-containing organic compound selected from the group consisting of pri- mary amines, methylamine and ethylamine; an ethanolamine, monoethanolamine, monoisopropanolamines, a diamine, ethylenediamine, 1,2-diaminopropane, a dialkylamine, dim› ethylamine, diethylamine, diethanolamine, diisopropanola› mine, N-methylethanolamine, N-ethylethanolamine, a ter- tiary amine, a trialkylamine, triethylamine, triethylamine, triethanolamine, N-methyldiethanolamine and tri-isopro› panolamine. 

23. The foamable waterless composition of claim 8, wherein the polymeric agent is a cellulose polymer or a car- bomer. 

24. The foamable waterless composition of claim 8, wherein the polymeric agent is dispersible in the polyol or in the mixture of a po Iyo! and an additional polar solvent. 

25. The foamable waterless composition of claim 8, wherein the surface active agent comprises at least one sur› factant selected from the group consisting of a polyoxyethyl› ene fatty ether, a polyoxyethylene fatty ester, a carbohydrate 

