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Newsletter Issue: 71 |
September 2015 |
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Floraesters K20W Jojoba
Improves sunscreen water-resistance
Incorporating Floraesters K-20W Jojoba into a Sunscreen
formulation resulted in improved SPF following 40-minute water
immersion.
"Early this year we saw SPF values coming under scrutiny
again, albeit unjustly. It did however once again highlight the challenge of
achieving and maintaining claimed SPF. Floratech's data shows
the impact of Floraesters K20W Jojoba in ensuring SPF is
maintained at claimed level even after 40 minutes immersion in water. Incredible data."
Kevin Cousins, Sales
Director
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Introduction
to the study
The Minimum Erythemal Dose (MED) is the lowest UV dose required
to produce perceptible erythema. The MED for each subject
was measured and used to determine the proper UV exposure during
testing of the sunscreen formulations.
The static SPF value was calculated using the MED of
sunscreen
protected skin (MDp) relative to the MED of
unprotected skin (MEDu)
on each subject using the following
equaton: MEDp / MEDu. For the 40-minute
immersion test, subjects sat with the testing site submerged in
a water bath for 2 x
20-minute periods prior to UV exposure, and SPF
was calculated
in the same manner as above.
Results
The graph below shows the SPF values for sunscreen formulations
with and without Floraesters K-20W Jojoba, for both the static
and
40-minute water immersion SPF testing:
After 40 minutes of
water immersion, the sunscreen formulation with 5% Floraesters
K-20W Jojoba had a 28% higher SPF and maintained an SPF rating
of 15 (which was not seen for the placebo formula).
>> Download the datasheet
Please contact us if you would like to receive further
information about Floraesters K20W Jojoba and for quotations or samples.
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For further information about any of the products mentioned in this newsletter, please
email us or contact your usual ProTec representative.
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www.protecingredia.com
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