The Best Hair Straightening Serums & Products

When straightening your hair, it’s obvious that the right styling tool is essential, but an often overlooked part of the process is using the right product.

Whether you have straight, wavy, or the curliest of hair, the right straightening serum will change your hair straightening game. 

Not only do straightening serums help you to achieve the perfect, silky smooth tresses, but they also have loads of benefits for your hair.

They offer your hair protection from heat damage, which is particularly important if you use heat styling tools often.

In addition, you can expect strengthening and nourishing benefits from your straightening serum to ensure that your hair is in the healthiest condition possible.

7 Best Hair Straightening Serums

To help you choose the option for you, we’ve created this list of the 7 best hair straightening serums out there. 

SheaMoisture 100% Virgin Coconut Oil Daily Hydration Finishing Oil Serum

The first product on our list is the Shea Moisture Coconut Oil Serum. This is a great hair straightening serum, especially if you have thicker or textured hair.

This affordable serum is packed full of nourishing ingredients, to provide you with gentle yet moisturizing treatment.

This serum is free from any harmful or harsh chemicals such as petroleum, alcohol, paragons, or phthalates. It’s also silicone free!

When straightening curly or textured hair, it’s important to really take care of your strands, as curly hair is usually finer, more delicate, and prone to heat damage.

This oil serum promises to smooth and protect your hair, whilst adding the perfect touch of shine.

It contains a perfect blend of coconut oil and coconut milk which is extremely hydrating.

It should be known that this product is intended for use on dry hair, so for best results, apply this hair straightening serum post-blow-dry before you flat iron your hair. 

Color Wow Dream Coat Supernatural Spray Anti-Frizz Treatment

Next on our list, we have the Color Wow Dream Coat Supernatural Spray. Although this is touted as an anti-frizz treatment, this product works amazingly well as a hair straightening serum, leaving your hair shiny and smooth.

It’s also great if you live in a humid or rainy area, thanks to the frizz-fighting properties of this spray.

This spray includes an anti-humidity technology that acts as a waterproof layer, creating a protective barrier between your hair and any moisture that will cause frizz. Not only this but this spray is also made with cruelty-free ingredients.

It’s super long-lasting and the smoothing effects are promised to last through three or four shampoos, making it a great option if you haven’t got the time to restyle your hair every day.

The technology in this spray is activated by heat, so for best results, blow-dry your hair after using it.

This product is so effective, that there are loads of reviews saying that you can even skip the flat iron.

OGX Smoothing + Liquid Pearl Luminescent Serum

The next hair straightening serum on our list contains sea kelp extract that provides your hair with protection and nourishment, and pearl extracts to provide your hair with a stunning shiny finish. 

Not only does this Pearl Luminescent Serum provide your hair with a shiny, silky smooth finish, but it’s also really affordable, making it a great choice if you’re shopping on a budget. 

John Frieda Frizz Ease 3-Day Straight Flat Iron Spray

The John Frieda Frizz Ease 3-Day Straight Flat Iron Spray is another great option for a hair straightening serum.

This affordable product contains polymers and keratin proteins that wrap around each hair strand to leave your hair smooth and sleek for up to three days (or until your next wash).

It’s also very lightweight, so it’s suitable for all hair types, including finer or thinner strands, and won’t weigh your hair down, leaving it feeling stiff or looking greasy. 

This serum also contains sea kelp that helps to nourish dry, dull-looking hair, and glycerin and vegetable protein to help ensure your hair stays moisturized when applying heat.

Olaplex Hair Perfector No 3

Next on our list is the Olaplex Hair Perfector No 3. This is a highly rated and very popular hair treatment, that technically is a strengthening treatment, but also doubles up as a highly effective smoothing product too.

This serum can be used on all hair textures and contains a science-based formula that works to repair the protein bonds in your hair that get damaged as a result of heat, coloring, and other factors.

The formula is also cruelty-free.

Another fantastic benefit of this serum is that it helps with styling your hair and can even boost volume into limp or lifeless hair.

To receive some of the many benefits of this product, simply use it a few times per week. 

R+Co Mood Swing Straightening Spray

This is another long-lasting hair straightening serum, that promises to last for up to three shampoos.

This product is ideal if you have thick, or curly hair that often needs a little extra help with smoothness. This serum guarantees a boost of shine and softness, as it’s packed full of natural extracts.

These wonderful ingredients also help to tame frizz and strengthen your hair strands in the process. 

This is also another cruelty-free product. To use this product, apply it to damp hair before blow-drying as this serum is heat-activated.

Oribe Straight Away Smoothing Blowout Cream

The last option on our list is an absolute top pick and for good reason.

This works for any hair type or texture, and delivers a huge range of benefits, from smoothing, and protecting against heat damage.

It’s formulated with antioxidants and protein to deeply nourish your hair. 

Although this product is one of the pricier picks on our list, a little goes a long way, and if you’re looking to splurge, you won’t regret choosing this wonder product by Oribe.

Not only will it transform the feel and look of your hair, but it also smells incredible!