Lotion which is temporarily colored upon application

Details Lotion which is temporarily colored upon application Lotion which is temporarily colored upon application

1996-07-25

1997-10-28

Shaver, Kevin P.

Dispensing

Plural sources, compartment, containers and/or spaced jacket

With selecting means

222 94, 222129, 424 59, B65D 3524, A61K 744

Patent

active

056809620

ABSTRACT:
A lotion such as a sunscreen includes a pH indicator which colorizes the lotion until the lotion is applied to the human skin, whereinafter the colored lotion turns clear. A physiologically compatible pH indicator such as phenolphthalein is used which has a red appearance from pH 7.5+ and which has a clear appearance from about pH 7.0 to 7.5; the general pH range of the skin. The invention is suitable for use in any lotion, gel, mousse or medication that is best applied in an even and uniform manner to the skin. Accordingly, one preferred use of the invention is in UV-protecting sunscreens so that a user can ensure even distribution of the sunscreen on the body. In certain aspects of the invention, a cap houses the pH indicator and attaches to a container of the lotion, e.g.; a sunscreen. The pH indicator mixes with the lotion as it is applied to the skin. The invention further provides methods of manufacturing sunscreens and the like with a pH indicator that turns substantially colorless upon prolonged contact with the skin.

REFERENCES:
patent: 3031104 (1962-04-01), Moskovitz
patent: 3042263 (1962-07-01), Gallo, Sr.
patent: 3152731 (1964-10-01), Prussack
patent: 3182860 (1965-05-01), Gallo, Sr.
patent: 3468458 (1969-09-01), Leigh
patent: 3751563 (1973-08-01), Richardson
patent: 3814287 (1974-06-01), Darbon et al.
patent: 4084983 (1978-04-01), Bernhard et al.
patent: 4271984 (1981-06-01), Ducros et al.
patent: 5567420 (1996-10-01), McEleney et al.

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