Bestie, OMG haven't we told you about the bonds that make up the hair fiber yet? Well, listen up, baby, because the bonds that make up the structure of hair are nothing more or less than the ones responsible for the shape of your hair (straight, wavy, or curly) and they play a super important role in keeping your mane looking healthy and beautiful.

Types of hair structural bonds

First things first, we need to remind you that the hair fiber is mostly made up of proteins, the main one being keratin. Its structure consists of four keratin fibers linked together by chemical bonds (disulfide bridges, hydrogen bonds, and ionic or salt bonds) to form a flexible spiral, giving shape to your hair.

Hydrogen bonds

Hydrogen bonds are very weak and temporary bonds, and they are as unstable as your relationship with your ex, so they are responsible for your hair's ability to change shape, and for its greater or lesser elasticity.

When the hair is wet, these bonds break and allow the hair to stretch, but when it dries, they are restored and return the hair to its initial shape (how cool, right?). The same thing happens when applying high temperatures to the hair using heat tools: the hair is able to change shape, straighten, wave, or curl, but we know that it will always return to its usual shape after washing.

Saline or ionic bonds

Ionic bonds are also temporary, although they are stronger than hydrogen bonds, and are formed from the union of the positively charged and negatively charged ends of amino acid chains. They give your hair strength and resistance, and depend on pH variations, so they are destroyed in the presence of hair products or chemical treatments that are too alkaline or too acidic. In addition, like hydrogen bonds, they break when they come into contact with water, allowing you to change the shape of your hair.

Disulfide bridges

Disulfide bridges (S-S) are very strong (and very tiny) covalent bonds that are responsible for maintaining the structure of your hair, defining its shape, as they are responsible for joining sulfur atoms between cysteine amino acids to form a cystine molecule, which is a super important component of the keratin in our hair. These bonds are very resistant and only break in the presence of very high temperatures, such as those of styling tools (yes, it's a drama), and with the use of hair products or treatments with a very alkaline pH, such as bleaching, dyes or permanent straightening. And, my dear, we are sorry to tell you that these do not rebuild themselves.

For your information, in curly or wavy hair, the amount of disulfide bridges is much higher than in straight hair, and that's why it adopts that "zig-zag" or "S" structure.

Do you want to know how to rebuild these bonds when they are damaged?

Meet Bae Berryyour new crush! This professional hair treatment is formulated with peptides and amino acids, helping to rebuild hair damage while giving it a super healthy look and an irresistible glow.

Its function is to rebuild the disulfide bridges of the hair fiber that have been damaged by bleaching processes, excessive flat irons, dyes or permanent straightening, giving hair back its structure, elasticity, strength and resistance, and improving its overall appearance.

How does it work? It works through peptides such as SH-Polypeptide-9, amino acids (Glycine, Alanine, Isoleucine, Serine, Valine, Threonine, Proline, Phenylalanine, Histidine), hydrolyzed proteins such as wheat protein, coconut oil, ceramides and cocoa and shea butters.

Peptides (short amino acid chains) and amino acids themselves act as building blocks for proteins such as keratin, providing elasticity and strength, while hydrolyzed proteins (which are positively charged) penetrate the innermost part of the fiber to replace damaged areas of the cortex where there has been structural loss.

Coconut oil, on the other hand, helps to reduce the loss of these structural proteins, as well as having a high lauric acid content, which allows it to easily penetrate inside the fiber thanks to its low molecular weight, nourishing it in depth.

It's the cocktail your hair needs!

So...baby, say bye bye to bad hair days.

It's time to meet your new Bae!