Nur um Mordras Beitrag noch zu unterstreichen:
Effect of mineral oil, sunflower oil, and coconut oil on prevention of hair damage:
Zitat:
This difference in results could arise from the composition of each of these oils. Coconut oil, being a triglyceride of lauric acid (principal fatty acid), has a high affinity for hair proteins and, because of its low molecular weight and straight linear chain, is able to penetrate inside the hair shaft. Mineral oil, being a hydrocarbon, has no affinity for proteins and therefore is not able to penetrate and yield better results. In the case of sunflower oil, although it is a triglyceride of linoleic acid, because of its bulky structure due to the presence of double bonds, it does not penetrate the fiber, consequently resulting in no favorable impact on protein loss.
Mapping penetration of cosmetic compounds into hair fibers using time-of-flight secondary ion mass spectrometry (TOF-SIMS) - ABSTRACT:
Zitat:
In this communication, penetration of vegetable oils into hair fibers has been investigated by the TOF-SIMS (Time-Of-Flight Secondary Ion Mass Spectrometry) method. In earlier work [1], the method was found suitable to study the penetration of coconut and mineral oils into human hair. Therefore, the study has been extended to a group of vegetable oils with different types of unsaturation in the fatty acid components. Different patterns of penetration have been observed for oils of different molecular structure. The general pattern which emerges from this study is that polyunsaturated oils do not penetrate at all, or do so only sparingly into the structure of hair. Most of these molecules seem to penetrate only into the cuticular region of the hair fiber. Oils with polyunsaturated fatty acids seem to have difficulty in penetrating hair. It is possible that these molecules do not fit into the fiber's cell membrane complexes, which are known to be the diffusion pathways in the keratin fiber. On the other hand, monounsaturated oils, such as olive oil, with more compact molecular structure seem to penetrate readily into the hair fiber.
Jetzt müsste man eigentlich "nur noch" die Ölsäurenzusammensetzung und die Molekularstruktur von diversen Ölen kennen und könnte dann die idealen Haarpflegeöle bestimmen.
Irgendwelche chemiebegabten Selbstrührer hier, die sich damit auseinandersetzen wollen?
Ich öle inzwischen nur noch trockenes Haar. Das hat aber eine ganze Weile zur Umstellung gebraucht. Der Grund? Das Haar soll ja eigentlich nicht so lange nass sein, weil die Haare vom Wasser aufquellen. Wenn ich die Haare öle solange sie noch nass sind, brauchen sie aber deutlich länger zum Trocknen. Das ist ja irgendwie kontraproduktiv. (Ist nicht auf meinem Mist gewachsen, ich finde es aber sehr logisch.)
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