Is Silicone Bad for Hair?

We get it—silicone can make your hair feel amazing after just one wash. Smooth, shiny, frizz-free? Yes, please. That instant gratification is exactly why silicones show up in everything from shampoos and conditioners to serums and heat protectants.

But here’s the thing: that glossy finish is way more of a cover-up than a cure.

What Silicones Really Do

Silicones are synthetic ingredients that coat your hair. At first, it feels like they’re doing something good—your hair feels silky, smooth and a little more manageable. But over time, the truth surfaces: hair becomes dry, brittle, weighed down and harder to hydrate. Volume disappears. Curls go limp. And texture is losing its edge. 

It's not just about how silicones make your hair feel, but also how they behave over time–especially the non-water-soluble types like dimethicone and amodimethicone. These don’t rinse out easily and can stick to your hair and scalp like cling wrap, repelling water and blocking all the good stuff from getting in.

The Hidden Fallout

“Many people use hair products with silicones for that quick, smooth finish. Over time, these synthetic ingredients build up, forming a waterproof layer that’s tough to wash off,” explains NULASTIN’s Chief Science Officer, Dr. Felipe Jimenez. “This buildup can clog follicles, block nutrients and trap oil and dead skin leading to a congested, irritated scalp and weaker hair growth.”

That’s not all. A study in the International Journal of Trichology found that prolonged use of silicones can reduce the hair’s tensile strength, especially when heat styling is involved. Over time, hair becomes weaker and more prone to breakage.

And if you have curly or coily hair, the issue can be even worse. Silicone buildup can disrupt your natural moisture balance, leaving strands dry, rough and harder to manage.

So... Should You Go Silicone Free?

Making the switch to a silicone free shampoo and conditioner is one of the kindest things you can do for your hair. Yes, there may be a short “detox” period. Your hair might feel a little different at first. But stick with it because what’s waiting on the other side is stronger, shinier, more resilient hair.

“Silicone free products keep the scalp clear and let essential ingredients actually do their job. They work with your body’s biology—supporting key proteins like elastin that help anchor hair and promote a healthy scalp environment,” adds Dr. Jimenez. 

What to Expect When You Switch:

Better moisture retention
Fewer scalp issues
Stronger, more resilient strands
Natural bounce + shine

Start Here: The Vibrant Scalp Duo

Our new haircare collection is proudly silicone free. Our Vibrant Scalp Shampoo + Conditioner Duo is the perfect reset:

Vibrant Scalp Shampoo delivers instant volume, shine and smoothness while helping reduce visible shedding and breakage.

Vibrant Scalp Conditioner repairs and softens without weighing hair down thanks to plant proteins, vitamin B5 and natural glossing agents.

Together, this breakthrough, biodesigned duo cleanses, fortifies and revives your hair from root to tip—with no buildup, no heaviness, and definitely no silicones.