Can You Train Your Hair To Be Less Oily? And Hair Care Myths!

Is it possible for hair to get used to not being washed and therefore not producing so much oil so that it won’t look greasy over time? Could this method keep hair at it’s healthiest? Wouldn’t this cause dandruff?

Does not washing your hair cause dandruff?

No, it doesn’t. Dandruff is caused by a combination of over active sebaceous glands and bacteria. If you don’t have dandruff, skipping your shampoo won’t “give” it to you.

Oil control

Now, let’s talk about how oil (also known as sebum) gets on your scalp in the first place. Sebum is generated in tiny sebaceous glands beneath the surface of the skin. These glands produce an oily substance that reaches the skin’s surface through hair follicles. Some sebum is a good thing – it’s a natural moisturizer and it keeps your skin and hair soft and supple. But, some people are prone to excess sebum production and that can be too much of a good thing. (If you’re interested, you can find some excellent background information on sebum at dermnet.)

File:Hair follicle-en.svg

When you ask if your hair can get used to not being washed you’re implying that leaving oil on your hair will somehow stop the production of more oil. The flip side of that implication is that stripping away the oil with a shampoo will make your glands produce more oil.

Well guess what.

That’s exactly what DOES happen. Sort of.

To understand how this works, you have understand how sebum production is regulated – in other words what turns the sebum glands on and off. It turns out that it’s the presence of sebum on the surface of skin that controls sebum production. How is that possible? Well, if you REALLY want to know, go read this study in which scientists stripped oil off skin and then measured how long it took the skin to re-oil itself. Their data indicates that the presence of oil on the skin’s surface sends a signal to the sebaceous glands to turn off. This signal is caused by either the pressure of the oil in the follicle or by the creation of a chemical signal that travels back down through the skin. So it turns out that, in theory, you can “train” your hair to be less oily.

But then why doesn’t shampooing make your scalp oilier and oilier? That’s because the oil production levels off very quickly.

Here’s how that works:

If you wash your hair you remove all the sebum on your scalp and that triggers your sebaceous glands to produce more oil. But once they’ve produced enough sebum to cover the your scalp, all that oil sends a signal to shut off production. So, you only end up with a certain amount of oil on your scalp – let’s call that amount “x.”

Now lets say that you don’t wash your hair – the sebum will still build up until it reaches “x ” amount. But then, the glands get the message to stop producing more oil. So, unless you take some of the sebum away, you still end up with “x” amount on your scalp. See how that works? Even though washing away sebum does trigger more sebum to be produced the sebum production levels off once the oils hits the scalp. The notion that washing your hair triggers more oil, which then makes you wash your hair again, which in turn gives you MORE oil so you end up with 2x or 3x oil on your hair or skin is just not true.

Of course, this is the case for healthy skin. If you have over-active sebaceous glands you can end up with oil skin or hair. But it’s not the shampooing that’s causing the excessive oiliness.

The bottom line

Depending on your hair type and how oily your skin is naturally, you might benefit by not washing your hair as much. That would be an interesting experiment to conduct. But don’t skip shampooing just because someone told you that it makes your hair oilier. That’s just not true.

Debunking hair care myths

• Myth: Trimming will make your hair grow stronger, longer, faster or thicker. Since hair is dead, cutting the ends has no effect on what happens at the scalp. Strands will grow at the same predetermined rate each month, and individual strands will grow in at the same thickness as before. While trimming or cutting the hair does seem to give the appearance of thicker hair, this is only because all of the freshly trimmed hairs now have the same, clear endpoint.

• Myth: Expensive products do more! Not necessarily. Always look for ingredients over brand names. There are just as many poorly formulated high-end products as there are bargain ones – and just as many worthy expensive products as there are bargain ones, too!

• Myth: Products made for or marketed to (insert race/ethnicity) cannot be used by those of other backgrounds. False! The ingredients in a product matter much more than to whom the product is marketed. In fact, most products have the same set of three to five base ingredients. Products for “ethnic” hair types tend to be more moisturizing and have more oils and proteins than those for other hair types. Damaged hair needs a good dose of moisture, proteins and oil to regain its healthy appearance. The same holds true for products marketed to those with color-treated hair. Even if your hair is not dyed, using a product for color-treated hair can be beneficial because these shampoo formulas tend to be gentler (to preserve easily washed away hair color) and conditioners tend to be super-conditioning, but lightweight, to help reduce dryness from the coloring process.

• Myth: Washing your hair too often leads to dryness. This depends. Hair can be cleansed as often as you like without dryness, provided you use the proper products to retain moisture. Those who generally have naturally drier hair types (including those of us with curls and highly textured hair) often shy away from frequent cleansing – but water is not the enemy! It’s the stripping shampoos and mediocre conditioners we use that are to blame. Using the proper moisturizing and conditioning products at wash time will actually increase your hair’s hydration.

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