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Year : 1992  |  Volume : 58  |  Issue : 1  |  Page : 51

Irritant property of soaps

Correspondence Address:
Sanjay Singh

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Source of Support: None, Conflict of Interest: None

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How to cite this article:
Singh S, Pandey S S, Kaur V. Irritant property of soaps. Indian J Dermatol Venereol Leprol 1992;58:51

How to cite this URL:
Singh S, Pandey S S, Kaur V. Irritant property of soaps. Indian J Dermatol Venereol Leprol [serial online] 1992 [cited 2020 Nov 29];58:51. Available from:

To the Editor,

pH of 5% solution and irritant property of 5 same brand soaps were tested in our department in 1974 [1] and 1987 [2] using Kligman and Wooding's technique [3] of evaluation of mild irritants of human skin. The results are shown in [Table - 1].

It is truly taxing to correlate the results. The method used in the studies is such that the results are valid for all conditions. [3] Thus the reason for such a striking difference in results can only be a change in composition of soaps over the years. The manufacturers do not disclose composition of soaps and we have no ISI guidelines so far as their irritant property is concerned. Keeping in mind the harmful effects that soaps can have on normal and eczematous skin, [4],[5],[6] practical application of the results of such studies to the patient will change over the time. The soap that has same name today is, in fact, not the soap of yesteryears with same name. This necessitates repeated testing of soaps for their irritant property.

It should be made mandatory for manufacturers to tell the composition of the soap, its pH and IT50 as compared to a reference soap at least once a year, lest people should continue to fall easy prey to attractive advertising and pretty faces.

  References Top

1.Singh R, Singh G. Evaluation of irritant properties of different toilet bar soaps, Ind J Dermatol Venereol Leprol 1975; 41 : 99 - 102.  Back to cited text no. 1    
2.Singh S, Singh G, Pandey S S. Comparative measurement of irritant properties of toilet bar soaps on human skin. Ind J Dermatol Venereol Leprol 1990; 56 : 434 - 7  Back to cited text no. 2    
3.Kligman AM and Wooding WM. A method for the measurement and evaluation of irritants of human skin. J Invest Dermatol 1967; 49 : 78 - 94.  Back to cited text no. 3    
4.Arndt KA Dermatitis (Eczema). In : Manual of Dermatologic Therapeutics. Little, Brown and Company, Boston /Toronto, 1989; 38 - 48.  Back to cited text no. 4    
5.Burton J L, Rook A, Wilkinson D S. Eczema, Lichen Simplex, Erythroderma and Prurigo. In : Textbook of Dermatology, (Rook A, Wilkinson D S, Ebling FJG, et al, eds), 4th edn Oxford University Press, B, 1987; 367 - 418  Back to cited text no. 5    
6.Epstein E. Hand dermatitis Practical management and current concepts. J Amer Acad Dermatol 1984; 10 395-424.  Back to cited text no. 6    


[Table - 1]


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