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<\/strong><\/h3>\nBiological perspective of hair<\/strong><\/h3>\nFrom a scientific standpoint, hair does not have a mechanism of adaptation or “immunity” to cosmetic products. To debunk the myth, however, we need to understand what hair actually is. Hair is a dead, keratinized tissue. It is composed mainly of keratin and has no metabolism, nervous system, blood circulation, or ability to learn and adapt. Simply put: hair does not “learn”, does not “remember”, and does not “get used to” anything.<\/p>\n
Why does a product seem to stop working?<\/strong><\/h3>\nThe perception that a shampoo, mask, or leave-in conditioner “no longer works” is real. The cause, however, is not what we usually assume. The most common reasons include:<\/p>\n
Product buildup:<\/u> Many hair care products contain silicones, polymers, oils, proteins, and other ingredients. Over time, these substances can accumulate on the hair shaft, forming a film. The result? Hair looks weighed down, loses its volume and shine, and products seem not to work properly. In this case, what truly happens isn\u2019t that hair has “gotten used to” the product. It\u2019s the outer layer of the hair that has become coated.<\/p>\n
Changes in hair needs:<\/u> Hair needs do not remain constant over time. They are affected by factors such as climate and seasonal conditions, the frequency and intensity of heat styling tools, chemical treatments (coloring, bleaching), age, hormonal changes, and more. This explains why a product that was suitable during a specific period or circumstance may no longer deliver the same results\u2014without necessarily having lost its effectiveness. As an example, a product that was ideal during winter may feel too heavy in summer. That does not mean it stopped working; it means that it no longer suits your current hair care needs.<\/p>\n
Changes in the scalp:<\/u> The scalp is a living tissue that undergoes changes in oiliness, sensitivity, composition, and microbiome balance. Since shampoos and cleansing products primarily target the scalp, any change in its condition may affect the perceived effectiveness of a product. For example, if we were using a shampoo designed to balance oil production, but our scalp has since “regulated” itself and now produces less sebum, the results will not be the same. Again, this is not a matter of hair \u201cgetting used to\u201d the product, but rather a change in the scalp\u2019s condition.<\/p>\n
The perception that a shampoo, mask, or leave-in conditioner “no longer works” is real. The cause, however, is not what we usually assume. The most common reasons include:<\/p>\n
Product buildup:<\/u> Many hair care products contain silicones, polymers, oils, proteins, and other ingredients. Over time, these substances can accumulate on the hair shaft, forming a film. The result? Hair looks weighed down, loses its volume and shine, and products seem not to work properly. In this case, what truly happens isn\u2019t that hair has “gotten used to” the product. It\u2019s the outer layer of the hair that has become coated.<\/p>\n
Changes in hair needs:<\/u> Hair needs do not remain constant over time. They are affected by factors such as climate and seasonal conditions, the frequency and intensity of heat styling tools, chemical treatments (coloring, bleaching), age, hormonal changes, and more. This explains why a product that was suitable during a specific period or circumstance may no longer deliver the same results\u2014without necessarily having lost its effectiveness. As an example, a product that was ideal during winter may feel too heavy in summer. That does not mean it stopped working; it means that it no longer suits your current hair care needs.<\/p>\n
Changes in the scalp:<\/u> The scalp is a living tissue that undergoes changes in oiliness, sensitivity, composition, and microbiome balance. Since shampoos and cleansing products primarily target the scalp, any change in its condition may affect the perceived effectiveness of a product. For example, if we were using a shampoo designed to balance oil production, but our scalp has since “regulated” itself and now produces less sebum, the results will not be the same. Again, this is not a matter of hair \u201cgetting used to\u201d the product, but rather a change in the scalp\u2019s condition.<\/p>\n
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