Unless a percentage of oatmeal is declared
on the package or in the adverts, consumers don’t know how much oatmeal is in a
bottle of shampoo. However, if it
is not declared as a percentage, it is reasonable to assume that it is one
percent or less. Most additives are used in amounts from one tenth of a percent
to one percent. If it is more than one percent, it will be used as a talking
point or sales point. Biogroom states that their oatmeal
shampoo contains 2%, Earthbath proclaims
3%.
Dilution
– Here’s the rub! A serious anti-itch oatmeal shampoo does NOT recommend
dilution. Why? When we dilute the shampoo, we also
dilute the active ingredient, in this case, the oatmeal. Dilution is one of the reasons many
groomers say that oatmeal shampoo does not work. It doesn’t - if
you are diluting it 15:1 or 33:1.
Let’s
do the math: There is 128 ounces in a gallon of
shampoo. If that product contains
the usual one percent oatmeal we have 128 x .01 = 1.28 ounces of oatmeal in the
gallon of shampoo. If we dilute
that 15:1, there is a total of 16 gallons of diluted shampoo with just 1.28
ounces of oatmeal or 1.28/16 = 0.08 (eight hundredths) of an ounce of oatmeal per gallon of
diluted product. I call that a negligible amount.
The oatmeal shampoo that declares the
greatest percentage of oatmeal, 3%, also sells the point that it can be diluted
33:1. 128 x .03= 3.84 oz oatmeal
divided by 34 diluted gallons = 0.112 oz. of oatmeal per gallon of diluted
shampoo. This may be a very gentle
shampoo, but it does not have any anti-pruritic property with that little
amount of oatmeal. It is also
unlikely to have much moisturizing value at that amount. What is has, is sales value. The same can be said for the 1% or less
of aloe vera that is often found in these soothing shampoos.
It’s
not just the oatmeal that makes an anti-pruritic shampoo. One of the first
oatmeal shampoos, that started the trend, was Virbac Epi-Soothe, a veterinary
product. Looking at their
marketing spiel, we see that Epi-Soothe has much more going than just the
colloidal oatmeal.
“Soap-free Epi-Soothe Shampoo helps soothe, cleanse, and control
mild itch. Epi-Soothe contains colloidal oatmeal, chitosan, and Spherulites
microcapsules. It employs glycotechnology
that helps reduce bacterial and yeast adhesion to the surface of the skin.
This action physically disrupts colonization of microorganisms on the skin
surface and may delay onset of irritation due to topical bacteria or yeast. Chitosan is a natural biopolymer that
creates a protective film on the skin and hair coat. Exclusive Spherulites microcapsules ensure a slow
release of the ingredients long after product application. For cats, dogs, and
horses.”
The delayed release technology is critical to this oatmeal shampoo, as
it allows the colloidal oatmeal to remain after rinsing the shampoo. On its own, colloidal oatmeal is not
substantive to the hair and skin.
It is removed in the rinsing.
Another thing we can notice about this shampoo is that they recommend
TWO shampoos, the first to remove dirt and excess oils, the second should
remain on the dog for at least 5 minutes, preferable 10 minutes, to allow
penetration of the active ingredients.
If groomers are to expect any anti-itch benefit from any therapeutic
shampoo, whether it be itch relief, anti-bacterial action, etc., there needs to
be extended contact time.
Summary and Conclusions: Although
colloidal oatmeal has well-established moisturizing, skin-soothing and anti-itch
properties, it is highly doubtful that it could exercise these effects in a
one-percent, two-percent, or even three-percent solution that is then
diluted. Our oatmeal math shows that a one percent formula diluted 15:1 results
in a solution that contains roughly eight hundredths of an ounce of colloidal
oatmeal in a diluted gallon.
Oatmeal is not that magical to be effective in such a reduced
amount.
In looking at the original Virbac Epi-Soothe oatmeal shampoo, we noticed
that this formulation has more than just the addition of colloidal oatmeal: It
has a delayed release delivery system, which prolongs the contact and
penetration of the colloidal oatmeal.
It also utilizes a unique “glycotechnology”, which is three sugars that
interfere with the ability of bacteria and fungi to adhere to the skin. The Epi-Soothe is also recommended in a
two-bath protocol, with the second application remaining on the subject for
5-10 minutes for optimum results.
None of the commercial pet shampoos marketed as anti-itch suggest a
prolonged contact time.
It would appear that most of the oatmeal pet shampoos are using oatmeal
for the sales psychology rather than true therapeutic effect. It is no wonder that groomers question
the efficacy of oatmeal shampoos. These products
marketed to groomers may be gentle shampoos, but a serious oatmeal product
would contain at least 2% colloidal oatmeal, and usage would recommend full
strength usage with a contact time of 5-10 minutes, minimum.
REFERENCES:
APPENDIX 1. For the information and ingredient
listings of several pet oatmeal shampoos from websites and the Pet Edge online
site, check out this document on my Dropbox: https://www.dropbox.com/s/bsjmiylca0j5pyb/OATMEAL%20LISTS.pdf?dl=0
For a detailed explanation of Virbac’s
glycotechnology and spherulites, as well as a journey into veterinary
dermatology, visit http://www.zoovet.ee/product/docs/4968531404.pdf
In addition to owning TRANSFORMATION PET CENTER in Tucson, Arizona, BARBARA BIRD is author of the book Beyond Suds & Scent - Understanding Pet Shampoos & Conditioners. She is also half of The Groom Pod, a weekly podcast for groomers. The Groom Pod can be found on iTunes, Stitcher, Facebook or www.thegroompod.com.
In addition to owning TRANSFORMATION PET CENTER in Tucson, Arizona, BARBARA BIRD is author of the book Beyond Suds & Scent - Understanding Pet Shampoos & Conditioners. She is also half of The Groom Pod, a weekly podcast for groomers. The Groom Pod can be found on iTunes, Stitcher, Facebook or www.thegroompod.com.
Elisa Paras wrote: "OHMYGOSH your blog is amazing !!! I am a groomer who recently started blogging as a project for one of my college classes. Stumbling across your blog seriously made my day- there are not many serious groomer-writers out there :) " I accidentally deleted the comment. Thanks, Elisa! My passion for writing about grooming is second only to my love of doing it. Thanks for recognizing my writing.
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