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Skin & Hair Concerns
Question #24453
45 days ago
72

how hair serum works - #24453

Anya

I am trying to wrap my head around how hair serum works since I’ve been using one for the past few weeks, but I'm honestly a bit confused. My hair has always been kind of frizzy and dry, you know? I read online that hair serum works miracles if you just apply it after washing, so I gave it a shot. I picked this one labeled as “nourishing”, and the first few times I used it, it seemed to help. But now, I’m not so sure. Like, how does hair serum works at all? Is it just a temporary fix for shine, or does it actually help with the health of the hair long-term? Sometimes it feels like my hair looks great immediately after applying it, but then the next day it's back to the same old frizz. Do I have to use it every time I wash my hair? Or can it be bad if I use it too often? Ugh, I just feel kinda lost here. Also, I noticed some products say they protect against heat damage — is that something hair serum works for too? I’m starting to think I need a better understanding of how hair serum works in general. Any insights would be super useful!

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Doctors' responses

Hair serum is mostly designed to coat the surface of the hair and smoothen frizz, add shine, and help manage tangles. Its primary function is to act as a leave-in treatment that fights off frizz by creating a lightweight shield on each strand. As for whether it can improve the health of your hair long-term, it generally offers more of a cosmetic fix rather than a comprehensive treatment for hair health. Think of it like a quick-fix band-aid rather than deep-healing therapy. The ingredients typically include silicones that immediately make hair appear sleeker by flattening the cuticle layer, which in turn reflects light and appears shinier.

For your specific case, considering your frizzy and dry hair type, using a serum post-washing is indeed a common approach. Most people use it while their hair is still damp to lock in moisture and seal the cuticle. If you often find it losing effect the next day, it’s likely due to the frizz returning as the silicone coating wears off. Using it after every wash can help maintain that polished look more consistently. While serums can offer a barrier against humid conditions and some heat protection, don’t rely solely on serum for comprehensive thermal protection. If heat styling is a regular part of your routine, consider using a dedicated heat protectant in addition to the serum.

As for any drawbacks, excessive use or over-application might weigh hair down, making it greasy or limp, especially if applied too close to the roots. Using the appropriate amount based on hair length and texture is key—a few drops usually suffice for mid-length hair. Remember, hair serums should complement a broader hair care regimen, so you might want to include nourishing shampoos and conditioners, plus periodic deep-conditioning or hair masks to support overall hair health. If you still feel uncertain, you might want to look into serums targeting specific issues like dryness or strengthening, and rotating between products could reflect better results over time.

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