Calling Maurice re: Naturlon-PC

[Guest guest]

I was sent a newsletter announcing Naturlon-PC a natural

preservative developed by Lonza. What do you know about it? Is it

for real or should we keep our parabens handy?

Jillian

[Guest guest]

>I was sent a newsletter announcing Naturlon-PC a natural

>preservative developed by Lonza. What do you know about it?

I have never used Natrulon PC-15 and the following comments are just my

personal reflections as I reviewed the sales information on Natrulon

PC-15 found at

http://www.todieforsoap.com/natrulon_pcg.htm

" Natrulon PC-15 is also an ideal replacement for synthetic preservative

chemistries, such as parabens and paraben blends, as many natural

product lines are upgraded or reformulated "

Based on that statement, it seems reasonable to believe that Natrulon

PC-15 is NOT an ideal replacement for other preservatives like:

Germaben II (INCI name: Propylene Glycol (and) olidinyl Urea (and)

Methylparaben (and) Propylparaben)

Germaben II-E (INCI name: Propylene Glycol (and) olidinyl Urea

(and) Methylparaben (and) Propylparaben)

Phenonip (INCI name: Phenoxyethanol (and) Methylparaben (and)

Ethylparaben (and) Butylparaben (and) Propylparaben (and)

Isobutylparaben)

Germall Plus (INCI name: olidinyl Urea (and) Iodopropynyl

Butylcarbamate)

Liquid Germall Plus (INCI name: Propylene Glycol (and) olidinyl

Urea (and) Iodopropynyl Butylcarbamate)

Liquid Germall Plus (INCI name: Propylene Glycol (and) olidinyl

Urea (and) Iodopropynyl Butylcarbamate)

Uniphen P-23 (INCI name: Phenoxyethanol (and) Methylparaben (and)

Butylparaben (and) Ethylparaben (and) Propylparaben)

LiquaPar PE (INCI name: Phenoxyethanol (and) Isopropylparaben (and)

Isobutylparaben (and) Butylparaben)

LiquaPar Optima (INCI name: Phenoxyethanol (and) Methylparaben (and)

Isopropylparaben (and) Isobutylparaben (and) Butylparaben)

" Natrulon PC is compatible in a diverse range of natural based product

formulations, for example:

Hair Care Shampoos, Conditioners, Rinses, Skin Care Liquid Soaps,

Shower Gels, Sensitive Skin Lotions, Moisturizers, Cold Creams, Sun

Products, Sunscreen Lotions and Creams, Raw Materials, Surfactants,

Shampoo Blends, Conditioner Blends "

Being compatible with all these products does not mean that all these

products will be effectively preserved with Natrulon PC.

" Ingredients in Natrulon PC are approved by key North American

regulatory authorities... "

For cosmetics sold in the USA, the FDA is the only regulatory

authority. Other than certified colors, the FDA does not approve raw

materials. They do ban some raw materials.

" ...including the Cosmetic, Toiletry and Fragrance Association in the

United States and the Canadian Cosmetic, Toiletry and Fragrance

Association.

The CTFA and, as far as I know, the CCTFA do not approve raw materials.

The next section of the Natrulon PC discusses " Microbiological

Efficacy " .

The first thing I notice is that the relatively simple (aka wimpy)

challenge test was run against Tea Tree Oil, d-Limonene and " Typical

Paraben Blends " . The paraben blends were unidentified.

By themselves, Tea Tree Oil, d-Limonene and " Typical Paraben Blends "

are not generally considered to be effective cosmetic preservatives. I

wonder why Natrulon PC was not tested against Germall Plus, Germaben II or

Phenonip? Could it be that Natrulon PC is not as effective.

When I look at challenge test results, I like to see how quickly the

preservative system kills the microorganisms. If you look at the

shampoo challenge test results for Germall Plus, you see that when used

at 0.1%, Germall Plus had significant kills after 48 hours. Lonza does

not report 48 hour results.

I wonder why Lonza only reported the results of challenge tests were

run on shampoo systems. It would have been nice to see some creams and

lotions.

" Natrulon PC can be used effectively over a wide pH range of 2 to 9 and

can be added at both room and elevated

temperatures. "

I though this was interesting. I wonder what they mean when they say

that " Natrulon PC can be used effectively over a wide pH range of 2 to

9... " ? Does it mean that Natrulon PC is an effective preservative from

pH 2 to pH 9? As I recall, Potassium Sorbate loses its effectiveness

at pH 6.5 or so.

Based on the data supplied, I don't think I'll be using Natrulon PC in

my products. I can't stand the risk.

I wouldn't use Natrulon PC unless I had performed and passe a USP or

CTFA challenge test.

Remember, Lonza " makes no warranty, expressed or implied, concerning

the accuracy of any results to be obtained from the use of this

information and no waranty is expressed or implied concerning the use

of these products other than indicated within. " and you, " [t]he buyer

assumes all risks of use and/or handling. "

I think this says that you are responsible for micro testing.

Maurice

--------------------------------------------------------

Maurice O. Hevey

Convergent Cosmetics, Inc.

http://www.ConvergentCosmetics.com

-------------------------------------------------------

[Guest guest]

I did read what TDF has on their site for this product and one thing

I noticed was that there is no real listing of ingredients, no INCI.

That is if " Naturally-derived cinnamaldehyde (CAS#104-55-2) for

antimicrobial activity.

-Potassium sorbate (CAS#590-00-1) for potentiating efficacy. " are not

the only ingredients.

I did look up cinnamaldehyde. I could not find any information on

it's use in a prevervative system, only information on repellants and

as a flavoring.

Here are a few sites I found out of many.

http://www.epa.gov/pesticides/biopesticides/ingredients/factsheets/fac

tsheet_040506.htm

http://www.inchem.org/documents/jecfa/jecmono/v44aje06.htm

http://www.inchem.org/documents/jecfa/jecmono/v14je07.htm

I seriously would avoid this product until it has been shown to be on

par with the tested and proven preservatives. I cannot trust

something without buckets of research that backs up it's statements.