tristan
Beiträge: 709 Registriert: November 2005
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| chris22 schrieb am Fre, 15 September 2006 10:40 |
| kaya schrieb am Fre, 15 September 2006 03:20 |
ich verstehe das nicht. alkohol hat doch eine bakterien abtötende sterilisierende wirkung und sollte somit gut gegen entzündungen der haut sein?
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exakt, ich mache bei mir trockenrasur und danach ein alkoholhaltiges after shave, brennt auch gar nicht, da ich mit dem rasierer vorsichtig über die haut fahre, auf keinen fall drücke ich ihn fest auf die Haut.
http://www.weleda.de/Koerperpflege/KopfbisFuss/Rasierpflege/ Rasierwasser.html#
hier, kann ich nur empfehlen, hält mir fast 1 Jahr.
chris
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hi,
ich weiß zwar dass aftershave auch oft aus prinzip oder tradition benutzt wird, und die ansicht herrscht dass es einfach dazu gehört. allerdings ist das überholt. Die Rasur irritiert die Haut, bei Trockenrasur zwar kaum (vielleicht merkst du deshalb auch nicht viel vom Aftershave?), aber generell braucht die Haut danach Feuchtigkeit und antientzündliche Wirkstoffe. Alkohol trocknet aber noch mehr aus. Der sterilisierende Effekt ist nebensächlich wenn man häüfig die Klingen wechselt (was früher nicht oft gemacht wurde) und bei Trockenrasur völlig irrelevant.
Für das Weleda Zeug würde ich Schadenersatz verlangen ! 
Da kann man ja gleich Parfüm draufsprühen oder den Alk ausm Keller holen.
Ingredients (INCI):
Alcohol, Water (Aqua), Hamamelis Virginiana (Witch Hazel) Distillate, Fragrance (Parfum)*, Commiphora Myrrha Extract, Limonene*, Linalool*, Geraniol*, Citral*. * from natural essential oils
alcohol. A group of organic compounds that have a vast range of forms and uses in cosmetics. In some benign forms they are glycols used as humectants that help deliver ingredients into skin. When fats and oils (See fatty acid) are chemically reduced, they become a group of less-dense alcohols called fatty alcohols that can have emollient properties or can become detergent cleansing agents. When alcohols have low molecular weights they can be drying and irritating. The alcohols to be concerned about in skin-care products are ethanol, denatured alcohol, ethyl alcohol, methanol, benzyl alcohol, isopropyl, and SD alcohol, which can be extremely drying and irritating to skin (Sources: "Skin Care—From the Inside Out and Outside In," Tufts Daily, April 1, 2002; eMedicine Journal, May 8, 2002, volume 3, number 5, www.emedicine.com; Cutis, February 2001, pages 25–27; and Contact Dermatitis, January 1996, pages 12–16). When these ingredients are at the top of an ingredient list it is problematic for all skin types, when they are at the end of an ingredient list there isn’t enough concentration present to be considered a problem for skin.
witch hazel. Can have potent antioxidant properties (Sources: Phytotherapy Research, June 2002, pages 364–367; and Journal of Dermatological Science, July 1995, pages 25–34) and some anti-irritant properties (Source: Skin Pharmacology and Applied Skin Physiology, March-April 2002, pages 125–132). However, according to the Consumer’s Dictionary of Cosmetic Ingredients, Fifth Edition, Ruth Winter, 1995, Random House), “Witch hazel can have an ethanol [alcohol] content of 70 to 80 percent. Witch hazel water … contains 15% ethanol.” The alcohol can be an irritant. Witch hazel also has a high tannin content (and tannin is a potent antioxidant), which can also be irritating when used repeatedly on skin, though when used for initial swelling from burns it can reduce inflammation.
Commiphora myrrha extract. Fragrant gum resin that can be a skin irritant. There is little research showing it to have any benefit for skin (Source: Healthnotes Review of Complementary and Integrative Medicine, www.healthwell.com/healthnotes/)
fragrance. One or a blend of either volatile and/or fragrant plant oils (or synthetically derived oils) that impart aroma and odor to products. These are often skin irritants (Sources: Dermatology, 2002, volume 205, number 1, pages 98–102; Contact Dermatitis, December 2001, pages 333–340; and Toxicology and Applied Pharmacology, May 2001, pages 172–178) (see volatile oils: volatile oil. Group of volatile fluids derived primarily from plants, and used in cosmetics primarily as fragrant additives. These components most often include a mix of alcohols, ketones, phenols, linalool, borneol, terpenes, camphor, pinene, acids, ethers, aldehydes, and sulfur, which all have extremely irritating and sensitizing effects on skin.)
lemongrass oil. Also known as Oil of Verbena; can be effective as a mosquito repellant (Source: Phytomedicine, April 2002, pages 259–262). As a volatile fragrant oil, it contains compounds (including limonene and citral) that can cause irritation.
linalool. Fragrant component of lavender that can be a potent skin irritant, allergen, or sensitizer (Source: Contact Dermatitis, May 2002, pages 267–272). Current research indicates that this component of lavender can be cytotoxic (meaning toxic) to skin cells (Source: Cell Proliferation, June 2004, pages 1365-2184). 
---
Dr. Nase.
The medical experts specializing in skin irritation do caution against the
use of all forms of strong alcohol (SD) and some are also now recommending
against the use of cetyl, stearyl and benzyl alcohols due to alterations
that they cause in the lipid bilayer of the epidermis (protective
barrier), and due to cumulative irritation and allergic contact
dermatitis .
Among many characteristics, alcohols are commonly used in skin care
preparations and topical medicines as penetration enhancers. 1 This
enhancement in percutaneous penetration may significantly enhance
irritation. 2 The principle mechanism by which alcohol enhances
percutaneous absorption is thought to be alteration in the intercellular
lipid shape or extraction of lipids from the stratum corneum. 1 These
changes in barrier function might make skin more susceptible to damage and
to permeability by other chemicals which may cause irritation. 1, 2
**Alcohol in skin care products can enhance penetration of topical drugs
by physically altering the epidermis, which can lead to subsequent
irritation. 3 In Fisher's Textbook of Contact Dermatitis, alcohol (of
all forms) added to skin care products are reported to cause both irritant
reactions and contact allergic reactions 4
More specifically, I have included a few references below regarding
these gentle thickening alcohols:
- Dr. Lazar an expert in skin irritant syndromes from the prestigious
Northwestern University Medical School strongly cautions against the
use of 'cetyl alcohol' on irritated, delicate skin (and in fact, puts
it at the top of his list of ingredients to avoid). 5
- In a 1990 medical article in Contact Dermatitis, Dr. Tosti and
colleagues indicate that adverse skin reactions to cetyl and stearyl
alcohols are more common than was once thought and thus, is often
overlooked by the general physician. They advise other physicians to
test patients for adverse irritant skin reactions to these particular
ingredients. 6
- In the 1998 Textbook of Dermatology, Drs. Griffiths and Wilkinson
stress that sensitivity to an ingredient in the vehicle is often and/or
easily overlooked by the general dermatologist. 7 They further
reference several articles that state that nearly all components of the
vehicle can be sensitizers including ¡§cetyl, stearyl and cetostearyl
alcohols. 7 Alcohol in cosmetics and skin care products can cause
subclinical irritation that cannot be detected by the physician but
will eventually show on patient¡¦s sensitive skin.
- Cetyl alcohol is reported to cause skin reactions in the 1999
Contact Dermatitis article Adverse cutaneous reactions to cosmetic
allergens. 8
- At a session during the IV International Symposia on Contact
dermatitis titled Frequent contact allergy to higher fatty
alcohols, Dr. Hannuksela cautions that the use of these forms of
alcohols may cause reactions in patients with sensitive skin. 9
- Stearyl alcohol is listed as causing adverse skin reactions in
Allergic contact dermatitis from topical drugs 10
- Cetyl alcohol is listed as causing adverse skin reactions in
Allergic contact dermatitis from topical drugs 10
- In the textbook Unwanted Effects of Cosmetics and drugs used in
Dermatology, alcohols such as emulsifying wax (cetyl, stearyl and SLS)
and pure stearyl alcohol are known to cause adverse skin reactions in
individuals with sensitive skin. 11
- The emulsifying wax (cetyl, stearyl alcohol and SLS) has been sited
as a frequent and significant cause of dermatitis in patients with
sensitive skin. 12
- Steryl and cetyl alcohols are referenced as causing adverse skin
reactions. 4
- Benzyl alcohol is referenced as an ingredient that can cause
allergic skin reactions in Allergic contact dermatitis from topical
drugs 10
Some more examples of adverse skin reactions by these gentle alcohols
in the medical literature:
- Dermatitis from cetyl and stearyl alcohols 13
- Benzyl alcohol allergy 14
- Contact dermatitis from fatty alcohols 15
- Contact dermatitis from cetostearyl alcohol 16
- A case of contact dermatitis due to impurities of cetyl alcohol 17
- Contact dermatitis due to corticosteroid cream base cetyl alcohol
and stearyl alcohol 18
- Irritancy of Alcohols 1
- Contact dermatitis due to Japanese pharmacopeia cetyl alcohol 19
- Contact allergy to fludroxycortid and cetyl alcohol 20
- Allergic reaction to benzyl alcohol in an antimycotic preparation 21
- Allergic reactions to benzyl alcohol in a sunscreen 22
- Contact allergy to benzyl alcohol and benzyl paraben 23
-
Reference List
1. Haan P, Meester HM, Bruynzeel DP: "Irritancy of alcohols", in Van
der Valk P, Maibach HI (eds): The Irritant Contact Dermatitis Syndrome.
New York, CRC Press, 1996, pp 65-70
2. Effendy I, Weltfriend S, Patil S, Maibach HI: Differential irritant
skin responses to topical retinoic acid and sodium lauryl sulphate:
alone and in crossover design. Br J Dermatol 1996;134:424-430
3. Zesch A: Skin irritation by topical drugs. Derm Beruf Umwelt
1983;31:74-78
4. Rietschel RL, Fowler JF: "Vehicles and preservatives including
formaldehyde, cosmetics, and personal-care products", in Rietschel RL,
Fowler JF (eds): Fishers Contact Dermatitis. edFourth. Baltimore,
Williams & Wilkins, 1995, pp 257-329
5. Lazar AP, Lazar P: Dry skin, water, and lubrication. Dermatol Clin
1991;9:45-51
6. Tosti A, Guerra L, Morelli R, Bardazzi F: Prevalence and sources of
sensitization to emulsifiers: a clinical study. Contact Dermatitis
1990;23:68-72
7. Griffiths WA, Wilkinson JD: "Topical Therapy", in Champion RH,
Burton JL, et al. (eds): Textbook of Dermatology . edSixth. Malden,
Blackwell Science, 1998, pp 3519-3563
8. Goossens A, Beck MH, Haneke E, McFadden JP, Nolting S, Durupt G,
Ries G: Adverse cutaneous reactions to cosmetic allergens. Contact
Dermatitis 1999;40:112-113
9. Hannuksela, M. "Frequent contact allergy to higher fatty alcohols".
1979. San Francisco, March 29-31. IV International Symposia on Contact
Dermatitis. (GENERIC)
10. De Groot AC, Weyland JW, Nater JP: "Allergic contact dermatitis
from topical drugs", in De Groot AC, Weyland JW, Nater JP (eds):
Unwanted effects of cosmetics and drugs used in dermatology. edThird.
New York, Elseveir Science, 1994, pp 55-135
11. De Groot AC, Weyland JW, Nater JP: "Allergic contact dermatitis
from topical drugs", in De Groot AC, Weyland JW, Nater JP (eds):
Unwanted Effects of Cosmetics and Drugs Used in Dermatology. edThird.
London, Elsevier, 1994, pp 657-670
12. Keilig W: [Contact allergy to cetylstearylalcohol (Lanette O) as a
therapeutic problem in stasis dermatitis and leg ulcer]. Derm Beruf
Umwelt 1983;31:50-54
13. Gaul LE: "Dermatitis from cetyl and stearyl alcohols". Arch Derm
1969;99:593
14. Li M, Gow E: Benzyl alcohol allergy. Australas J Dermatol
1995;36:219-220
15. Tosti A, Vincenzi C, Guerra L, Andrisano E: Contact dermatitis
from fatty alcohols. Contact Dermatitis 1996;35:287-289
16. Rademaker M, Wood B, Greig D: Contact dermatitis from cetostearyl
alcohol. Australas J Dermatol 1997;38:220-221
17. Komamura H, Doi T, Inui S, Yoshikawa K: A case of contact
dermatitis due to impurities of cetyl alcohol. Contact Dermatitis
1997;36:44-46
18. Higashiyama M, Yoshikawa K, Kozuka T, Sohma T, Tada M: "Contact
dermatitis due to corticosteroid cream base-cetyl alcohol and stearyl
alcohol". Skin Research 1989;31(suppl 7):126-131
19. Kato N, Numata T, Kanzaki T: "Contact dermatitis due to Japanese
pharmacopeia cetyl alcohol". Skin Research 1987;29(suppl 3):258-262
20. Hausen BM, Kulenkamp D: [Contact allergy to fludroxycortid and
cetyl alcohol]. Derm Beruf Umwelt 1985;33:27-28
21. Shoji A: Allergic reaction to benzyl alcohol in an antimycotic
preparation. Contact Dermatitis 1983;9:510
22. Edwards EKJ: Allergic reactions to benzyl alcohol in a sunscreen.
Cutis 1981;28:332-333
23. Wurbach G, Schubert H, Phillipp I: Contact allergy to benzyl
alcohol and benzyl paraben. Contact Dermatitis 1993;28:187-188
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