Dynagen-R: the protein technology that rebuilds hair from the inside

By Marco Redavid. Reviewed by Leonardo Redavid, founder and stylist. Reviewed September 26, 2026.

Dynagen-R is a patented yeast protein, fermented from Fair Trade sugar cane, that is molecularly similar to the protein your hair is already made of. That similarity is the whole point: it bonds into the damaged patches instead of sitting on top of them, so hair gets stronger rather than just feeling coated. In lab testing at one percent, it raised the markers of hair strength and structure by 50.94 percent against an untreated control.

It is in fifteen of our nineteen products. The four stylers that do not contain it say so on their own pages, because a protein claim on a product that has no protein in it is how brands lose trust.

Saccharomyces cerevisiae, hydrolyzed. Yeast, fermented from Fair Trade sugar cane, sourced in France, patented and made for us alone.

Hair is keratin, a protein. Bleach, heat and time break that protein apart and leave gaps in the structure, which is what damage physically is. Most repair products fill those gaps with something that is not protein, usually a silicone or an oil. It works beautifully until the next wash.

A protein with a molecular profile close to hair’s own can do something different. It fits. It bonds into the gap and stays there through washing, which is why the effect accumulates over a few weeks instead of resetting every time.

The same molecule also carries a vitamin B complex, mostly thiamine, along with riboflavin, niacin, pantothenic acid and ergosterol. Those are not the repair mechanism; they are what keeps the strand conditioned while the repair happens.

We tested Dynagen-R at one percent against an untreated control and measured the biological markers of hair strength and structure: keratin 14, keratin 17 and keratin 71, collagen I and collagen IV, CD34 and trichohyalin. Measured as area under the curve over total stained area, the treated sample came in 50.94 percent higher.

That is a laboratory measure of the proteins hair strength depends on, not a claim about how hair looks after one use. What it tells you is that the protein is reaching the structure and doing something there. What you notice at home is slower: less breakage at the brush, ends that stop splitting as fast, and hair that holds a blow dry.

Every product that carries Dynagen-R runs the same three steps, every time you use it.

Rebuild. Collagen, keratin and hair proteins are replaced and boosted where damage has stripped them out.

Rehydrate. The HydroNutrient complex deposits vitamins and amino acids into the strand, which is what stops a protein treatment from leaving hair stiff.

Reseal. The cuticle is repaired and resealed, so the strand resists free radicals and humidity rather than swelling in them.

That third step is the one people skip when they treat protein as a standalone product. Protein without moisture and without a sealed cuticle gives you the brittle, straw-like result that has given protein treatments their reputation. The balance is the formula, not the routine.

Not in it: Orchid Oil Treatment, Texture Creme, Working Spray and Max Hold Spray. Those are shine and styling products and they are built to do a different job.

The honest answer is that with these formulas it is hard to overdo, because the protein never arrives on its own. Every product that carries Dynagen-R carries the moisture and the cuticle seal alongside it, which is what the three phases are for.

If you are using a shampoo, a conditioner and a leave-in from the same collection, you are already at the right dose. Add the Dual Therapy twice a week when hair is actively breaking, and the Reconstructive Mask once a week when it has gone past dry into damaged. When hair starts holding moisture on its own again, step the treatments back and let the wash routine carry it.

The signal to watch for is not stiffness, it is silence: hair that stops giving you a reason to think about it.

This is the question behind most of the damaged hair that reaches a stylist’s chair, and people almost always guess wrong, because the two problems look similar in the mirror and feel opposite in the hand.

Hair short on protein stretches. Take a strand from the brush, wet it, and pull gently: if it keeps going like elastic and does not spring back, the structure is missing. It will feel gummy when wet and limp when dry, and it will not hold a style for more than a few hours.

Hair short on moisture snaps. The same strand breaks almost immediately with no stretch at all. It feels rough and squeaky rather than soft, it frizzes in any humidity, and color fades fast because a dry cuticle will not hold pigment.

Most damaged hair is short on both, which is why the three phases matter more than picking a side. If you are genuinely unsure, start with the wash routine from the collection that matches your hair rather than reaching for a treatment, and let two or three weeks tell you what is still missing.

Two to three weeks of normal washing, on most hair. The first thing people notice is the brush, because breakage is the fastest thing to change. Split ends slow down next. Body and shine come last, because those depend on the cuticle being resealed along the whole length, and the whole length takes time to cycle through.

If nothing has changed in a month, the problem is probably not protein. Hair that is heavy, flat and unresponsive is usually carrying build-up, and no repair ingredient reaches the strand through a coating. That is a clarifying problem, not a protein one.