10 Best Straightening Shampoos 2025 in the UK

The Redken Frizz Dismiss Shampoo is designed to cater primarily to those with curly hair, promising to tame frizz and smooth out unruly locks. Its primary ingredient, Babassu Oil, is known for its nourishing and hydrating properties, which helps in enhancing hair shine and sealing cuticles for a sleeker look. This makes it suitable for users dealing with frizz and seeking a smoother finish to their hair. It also comes in a decent 300ml size with a promise of 66 percent more product, making it economical for daily use.

A notable omission in its feature list is heat protection, which might be a concern for users who frequently use heat styling tools. The shampoo is fragranced with a citrus scent, which could be refreshing but might not appeal to those sensitive to strong odors. Redken as a brand has a solid reputation in haircare, which can provide assurance of quality and effectiveness.

While it excels in moisturizing properties and tackling frizz, it lacks specific mention of other ingredients that might cater to different hair needs or preferences. If your primary concern is managing frizzy, curly hair, this shampoo could be a strong candidate. But if you're looking for additional straightening or heat protection benefits, you might need to supplement it with other products or heat protectants.

The John Frieda Frizz Ease Brazilian Sleek Frizz Immunity Smoothing Shampoo and Conditioner Duo is a noteworthy option for those battling frizzy, medium to coarse hair. This product shines with its ability to tame unruly frizz, thanks to the inclusion of a frizz immunity complex and keratin drops, which are known for smoothing and enhancing hair's shine. Users have praised its ability to leave hair sleek and glossy, making it a practical choice for those looking to achieve long-lasting, smooth hairstyles.

The fruity scent adds a pleasant aroma, which can be a delightful feature for users who enjoy fragrant hair products. The generous salon-size bottles with convenient pumps make it easy to use and suitable for long-term application, providing good value for frequent users.

However, while this duo is especially formulated for frizzy and medium to coarse hair, it may not suit all hair types. Those with fine or oily hair might not receive the same benefits and might find the product too heavy. Additionally, while the product provides frizz management, it does not specifically mention heat protection, which might be a limitation for users who regularly use heat styling tools.

John Frieda is a well-regarded brand, known for its hair care products, which adds a layer of trust and reliability to this duo. With a customer review rating of 4.4 out of 5 stars, it has received positive feedback for its performance. However, potential buyers should consider their specific hair type and styling needs to ensure it aligns with their expectations.

Kérastase Discipline Smoothing Anti-Frizz Shampoo is designed to control unruly hair and is suitable for all hair types, including frizzy hair. One of its main strengths is that it is sulphate-free, which makes it gentle on hair that has been damaged by chemical treatments or over-processing. This shampoo excels at taming frizz and restoring smoothness, giving you soft, supple, and tangle-free hair.

Additionally, it nourishes and smooths hair fibres, improving overall hair health and manageability. The application is straightforward: you simply apply to wet hair, emulsify, massage, and rinse thoroughly, with an optional second wash for deeper cleaning. This product is unscented, which could be a plus for those sensitive to strong fragrances.

As for brand reputation, Kérastase is well-regarded in the beauty industry, often praised for its high-quality hair care products. However, it's worth noting that the shampoo does not offer explicit heat protection, which might be a drawback if you frequently use heat styling tools. Additionally, while it's effective for frizz control, its unscented nature might not appeal to those who prefer a fragranced hair care experience. Despite these minor drawbacks, this shampoo is a solid choice for adults looking to manage unruly, frizzy hair while maintaining hair health.