A Look Behind the Scenes: The Inspiration and Science Behind Our Hair Care Products

BONJOUR DAH-LING! At Number 4, we believe hair care should be as luxurious and practical as it is safe and natural. That’s why our botanical hair care products are made with plant-based ingredients, free from parabens, sulfates, and phthalates—allowing you to enjoy the highest-quality professional hair care without worrying about toxins and other nasties. Inspired by exquisite French style and culture, each collection and individual product is about so much more than high performance. We're just as influenced by fashion, science, art, music, and industrial design as we are by high-quality ingredients

What sets Number 4 apart from the competition?

But what really sets us apart is our passion for innovation and scientific research. We take pride in continual exploration and experimentation, ensuring each product contains only the best ingredients with proven results. Our products are developed and tested by a team of leading scientists with decades of experience in cosmetology, botany, and dermatology. This research informs the core of our product line—from shampoos to conditioners to styling products—bringing you effective solutions for any hair type or concern. This approach is designed to give you the most luxurious and transformative results, regardless of your hair care needs.

Number 4 Liquid Complex Culture

At Number 4, we are particularly proud of our Liquid Complex Cultures. Taking the science of hair care to a new level, this liquid-based technology uses a combination of natural ingredients to penetrate deep into the hair’s cortex. With four different complexes, whether your goal is vibrance, vitality, defense of purity, our potent, high-performing formulas deliver everything your hair requires to enjoy an extraordinary experience. From improved moisture retention and elasticity to increased color retention and vibrancy while protecting your hair from environmental damage, behind the scenes our formulas are working hard on your behalf. Whether you’re looking to add shine, manage frizz, preserve color vibrancy, or simply keep your locks hydrated and healthy, our Liquid Complex Cultures pave the way for superior results. Discover more about our Liquid Complex Culture.

Healthy hair starts with nourished strands

At Number 4, we believe that beautiful hair starts with healthy, nourished strands. That’s why we craft each product with tender loving care, using safe ingredients and rigorous science to bring you the best in botanical hair care. Our mission is to leave your hair feeling softer, healthier, and more beautiful than ever before.

Drawing inspiration from nature and its bountiful botanicals

We’ve done extensive research to create our line of hair care products, seeking out the most beneficial ingredients from around the globe. From exotic flower extracts to rare herbs, we have sought out the best nature has to offer and combined it with science to create a truly unique and effective range of professional hair care products. Black currant, yerba mate, hibiscus, mangosteen and oolong tea are just some of the exceptional ingredients you'll discover. Our scientists have carefully formulated each product in our range to ensure that they are compatible with every hair type and provide superior results. Our products contain natural ingredients such as keratin, argan oil, and coconut oil, leaving your hair feeling soft and nourished. They also feature advanced technologies such as hydrolyzed proteins, amino acids, and antioxidants to promote strong and healthy-looking hair.

Rigorous testing but never on animals

We’ve taken the time to develop and test each product in our range so that you can trust that it will give you the best results possible. Our botanical-infused products are paraben free, sulfate free, and cruelty free, making them gentle yet effective on your hair. With our professional hair care products, you can trust that your hair will look and feel its best dah-ling. At Number 4, we take great pride in the inspiration and science behind each of our products. We believe that nature knows best when it comes to caring for your hair. We strive to bring you the most luxurious and hard-working, results-driven hair care products on the market.

Here's what you'll never find included in the Number 4 range

• Parabens
• Sulfates
• Phthalates
• DEAs
• Formaldehyde or Formaldehyde-releasing agents
• Petrochemicals
• Butylene Glycol
• Synthetic colors or fragrances
• Animal byproducts or animal testing of any kind

We hope you feel inspired to try our professional hair care products for yourself dah-ling. So why not go ahead and browse our website and shop now to experience stunning hair care results?