Vegan and cruelty-free: Monday Haircare products are vegan and cruelty-free, which may appeal to consumers who prefer to use products that are not tested on animals. A YouTube creator named “SummerNicole” reviewed Monday Smooth Conditioner in an unsponsored video and explained why it didn’t work for her:

This ingredient is Butylated Hydroxytoluene. This ingredient is used to preserve the shampoo to be used for longer. A YouTube creator with self-described hair damage and dry hair tried Monday Shampoo for two weeks in an unsponsored review and shared her thoughts about whether or not it’s effective: Provitamin B5, also known as panthenol, is a renowned moisturizer that is a friend to delicate scalps. It soothes and nourishes both the skin and hair, promoting elasticity and improving the appearance of split ends. Ginger root extract People sensitive to fragrances should avoid this shampoo because it is heavily fragranced and unsafe for them. Just as their names imply, Smooth Shampoo and Conditioner both impart soft, shiny hair and cut down on frizz. I usually can’t even be bothered to use conditioner and try to find extra hydrating shampoos to make up for that skipped step, but I’ve happily used both bottles every time I wash my hair. I’m a fan of how the combined formulas give a glossy finish to my hair without weighing down my waves. Although this isn’t the volumizing duo, my air-dried hair still maintains tons of lift and movement (and smoothness, of course). To enhance the results, I gently towel-dry with my trusted Aquis Rapid Dry towel and sleep on a silk pillowcase to cut down on tangles and preserve shine. (The ones from Branché are amazing and hold up best after multiple washes.)Limited availability: Monday’s products may not be available in all areas, as the brand is still relatively new and may not be widely distributed. Wide range of products: Monday Haircare offers a wide range of products, including products for different hair types, concerns, and styling needs. All Monday products are paraben- and SLS-free, making them safe to use on color-treated hair. While I had a great experience with this formula, a few of the ingredients in the Smooth range don’t pass our ByrdieClean Beauty Pledge. Both the shampoo and conditioner contain BHT (butylated hydroxytoluene), a commonly used preservative linked to skin irritation and hormone disruption. I didn’t experience any reactions, but if your scalp tends to be extremely sensitive, I would recommend doing a small patch test before incorporating this duo into your regular routine, or go for a more scalp-focused set. Yes, Monday shampoo has silicone, and even though silicone is not extremely dangerous for hair, it is still responsible for many hair problems.

The brand claims this shampoo not only cleanses the scalp deeply but also tames the frizz and makes the hair super-smooth and hydrated. Keratin, a deeply hydrating protein, binds to the hair, offering protection against heat styling and environmental elements. It repairs damaged hair, adds shine, and reduces frizz and split ends. Grapefruit extractOverall we consider Monday Smooth Conditioner likely to improve hair quality because of the coconut oil and panthenol, but we do not recommend the product due to the inclusion of a number of questionable additive ingredients such as six distinct preservatives.