Thames & Kosmos Creative Cosmetics Lab handleiding
Handleiding
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Many plants,
such as cherries, violets,
blueberries, and black
currants contain natural
dyes that act as
indicators.
Why do pH strips change color when they come in
contact with an acid or base? pH strips are made
from filter paper that has been soaked in different pH
indicators and allowed to dry. An indicator is a molecule
that will change color if it is placed in an acid or a base.
Chemists use the pH
system to measure
acidic and basic
solutions. pH stands for “potential of
hydrogen,” and the p is lowercase while
the H is capitalized. The pH scale goes
from 0 to 14. Values below 7 are acidic
and values above 7 are alkaline. Pure
water has a pH of 7, which is considered
neutral — neither acidic or alkaline.
Healthy skin has a pH-value of 5.5 to 6.5.
After washing with regular soap, its pH-
value will be elevated to about 9. It can take
up to 2 hours before the skin can replace
its acidic protective coat. Until then, if the
skin is too weak, the doors are wide open for
attacks by infectious agents. You can help
your skin protect itself by selecting suitable
skin care products in the range of pH 5 to 5.5.
pH
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
pH:
22
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Productinformatie
| Merk | Thames & Kosmos |
| Model | Creative Cosmetics Lab |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 10798 MB |
