Thanks to a variety of floral-themed outfits, gorgeous dewy makeup, and perfect blowouts, Blake Lively's appearances during this summer's press tour for It Ends With Us have been nothing short of spectacular.

But even though she's a glamorous Hollywood star, the Gossip Girl actress doesn't always follow the rules, especially when it comes to her enviable hair.

4 When mother-of-four launched her own haircare range, Blake Brown, on August 4, one popular product, often considered essential when it comes to haircare, was noticeably absent: conditioner.

The lack of conditioner, however, was not the result of carelessness but a reflection of Blake's personal approach to hair care, inspired by professional stylists whose sole job is to ensure celebrities are perfectly coiffed.

The actress had this to say when referring to Gossip Girl's stylists. Mohan: 'They were like, “Oh God, no, we don't use conditioner.” And since then, neither has he.

Actress Blake Lively (pictured), 36, known for her sleek, shiny hairstyle, launched her own haircare range, Blake Brown, in the US on August 4.

Blake Brown products (pictured), which are all vegan and silicone- and sulfate-free, come in containers designed to resemble precious metals.

From this same stylist, Blake learned the real secret to the stars' luscious locks, like hair masks.

And with the Blake Brown range (Blake's father's surname is Brown), sold exclusively at Target stores in the US, they're on a mission to turn conditioner fans into hair mask enthusiasts.

The 36-year-old doesn't go straight from shampoo to styling – in any case, there's no way to achieve her signature smooth, shiny, bouncy blow-dry.

Instead, Blake has made hair masks a mainstay of her routine, using them after “every wash,” according to Allure, and includes two varieties in her product line.

In an interview with Dr. Blake, he revealed: “It’s not that people in the entertainment industry have better hair.”

“We use a different hair system promoted to the mass market.”

The system, as you can deduce from the Blake Brown range, consists of two shampoos – one 'nourishing' and one 'strengthening' – and two complementary hair masks, alternating between the two series of products.

Because “your hair needs two things, strength and hydration,” as Blake told Vogue, it’s essential to use one set when you wash your hair and then switch out for another set the next time.

Blake learned from professional stylists early in her career that traditional conditioners are best avoided in favour of hair masks, and the Blake Brown conditioner-free range reflects this.

When it comes to moisture, consumers should opt for the Wild Nectar Santal Basic Nourishing Shampoo ($19) followed by the Wild Nectar Santal Basic Nourishing Mask ($20).

And when it comes time to strengthen, the products are the Sandalwood Vanilla Essential Strengthening Shampoo ($19) and the Sandalwood Vanilla Essential Strengthening Mask ($20).

Blake Brown also offers a pre-shampoo treatment called Milky Sandalwood Rich Reset Pre-Shampoo Mask ($25) and three styling products: Bergamot Woods All-In-Wonder Live-In Potion ($19), Blackcurrant Vanilla Glam Mousse ($19), and Amber Vanilla Dry Shampoo ($20).

Sold in packaging designed to resemble precious metals, the products promise to enhance not only your hair but your bathroom as well.

You'll notice that at $19 and $20, the products, which, seven years in the making, are all vegan and silicone- and sulfate-free, are much cheaper than other premium brands.

Shocked by the prices of some of the products she recommended during her career – for example, Kérastase's $48 shampoo – Blake wanted to make sure her range was affordable.

He told Allure: “It took me a long time to get it right and get it at that price.”

The Black Brown range of products, with its two shampoos – one 'nourishing' and one 'strengthening' – and two complementary hair masks, took seven years to develop.

But it wasn't just the wrong prices that slowed down the process. Rather, Give Back Beauty, the company the actress partnered with to develop and launch the products, wasn't interested in removing the conditioner from its range.

Blake said:They said, “You have to offer conditioner because if people don’t see that you have conditioner, they’ll go to someone else with conditioner and then you might lose shampoo sales.”

“I said, ‘I know, but it seems unfair because I use masks. Every time I wash my hair. I don’t want to just offer conditioner.’”

Even if Blake wins that battle, it remains to be seen whether her brand of hair-care innovation will become a full-blown revolution.