Apple cider vinegar (ACV) has surged in popularity as a natural remedy, with proponents touting its potential benefits for a variety of health concerns. Among these, its use in hair care has gained considerable attention. This article delves into the purported benefits of apple cider vinegar for hair, examining the science, anecdotal evidence, and practical considerations for incorporating it into your hair care routine.
Vinegar, in general, is a product of fermentation, a process where sugars in a carbohydrate source are broken down by bacteria and yeast. Specifically, apple cider vinegar (ACV) is derived from fermented apple juice. The process involves crushing apples and mixing them with yeast or another carbohydrate source. Natural bacteria then ferment the juice, converting the alcohol into acetic acid, the main component of vinegar. The final product can be pasteurized and filtered, or it can be left raw and unfiltered, containing the "mother," a colony of beneficial bacteria and enzymes. Many ACV enthusiasts believe that the "mother" is key to its health benefits.
Many health and beauty blogs claim that an ACV rinse can boost hair growth. However, we must remember that there is very little published research on this. Much of the excitement about ACV is based on anecdotal evidence or studies that look at vinegar in general. The claims center on people using ACV as a rinse on their hair.
While anecdotal evidence and some scientific principles suggest potential benefits, it's crucial to approach these claims with a critical eye.
Hair has an ideal pH level of between 4 and 5, but many commercial shampoos may disrupt this. A 2014 study found that the high alkalinity of many brands contributes to hair friction, breakage, and dryness. Because ACV has a high acidity, it follows that it could help maintain the pH balance, thus making hair smoother, stronger, and shinier.
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ACV is an acidic substance containing high amounts of acetic acid. The natural pH level of hair is between 3.67 and 5.5, which means it’s slightly acidic. A substance with a pH value higher than 7 is considered alkaline. Hair that looks dull, brittle, or frizzy tends to be more alkaline or higher on the pH scale. Using an acidic substance with a pH level below 5.5 may help lower pH and bring hair health back into balance. ACV has a pH level between 2 and 3. As a highly acidic substance, ACV could help increase acidity and lower pH, which may support smoothness, strength, and shine.
It has been suggested that ACV’s natural acidity helps to smooth down the cuticle of a person’s hair. This encourages knots and tangles to slip out and reduces the frizz associated with lifted cuticles. It also means hair may be better able to reflect light, giving it a more glossy, healthy glow.
Some dermatologists have said ACV’s anti-inflammatory and antimicrobial properties may combat the yeast and irritation that lead to the build-up of dead skin cells, flakes, and itching.
ACV is a popular home disinfectant that may kill several bacteria, such as Escherichia coli and Candida albicans. It could also help kill Staphylococcus aureus, the most common bacterial cause of folliculitis, a hair condition that may lead to hair loss. Research suggests that acetic acid in ACV has antibacterial, antifungal, and antioxidant properties that could help treat scalp conditions like head lice and pruritus. It could also help boost the healing of wounds and infections.
Bloggers have claimed that an ACV rinse might help people with curly hair achieve a bounce in their hair. The thinking behind this is that the vinegar does not weigh down individual strands of hair as conventional shampoos and conditioners might. This claim is supported by anecdotal evidence only.
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According to experts from the United Kingdom’s hair loss treatment specialist the Belgravia Centre, the only real benefit we are aware of is that ACV can be a good clarifying hair rinse as it helps to remove all traces of product buildup on your scalp. Buildup left behind by styling products or shampoo can clog the follicles, leading to scalp conditions such as dandruff, and - in extreme cases - may also cause hair loss.
An ACV wash can be made very simply: Mix 2 to 4 tablespoons of ACV with 16 ounces of water. After shampooing and conditioning, pour the mixture over your hair evenly, working into your scalp. Let it sit for a couple of minutes. Rinse it out. Try incorporating the ACV rinse into your hair care routine twice per week.
While ACV is generally considered safe for topical use when diluted, it's essential to be aware of potential risks:
Choose an organic, raw, unfiltered brand of ACV. The vinegar should be slightly cloudy rather than clear, and contain a small amount of sediment (called ‘the mother.’) This is where all the nutrients live!
Apple cider vinegar may help increase the acidity of your hair, which could benefit frizzy hair. However, no research has examined the direct effects of apple cider vinegar on frizzy hair. Some people suggest that ACV could help strengthen hair and improve luster by lowering hair and scalp pH. It may also have antibacterial, antimicrobial, and antifungal properties that could help improve hair health. However, ACV shouldn’t be relied on to reduce inflammation or solve scalp conditions like dandruff. Very limited research has examined its effects on hair health.
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