Skin-Nomad's Take — At a Glance
- Seventeen free amino acids and six forms of hyaluronic acid
- Hydrolysed soy, wheat and corn protein, declared at 750 ppb each
- Violet Muguet scent, a single signature fragrance for the range
If your hair is bleached or heavily processed, the wash is the step doing the most damage and the least about it. The KUNDAL Protein Bonding Shampoo Violet Muguet loads that step with seventeen free amino acids and six molecular forms of hyaluronic acid, so material goes back into the shaft while the surfactants are taking oil off it. KUNDAL, a Seoul brand founded in 2019, built its Protein Bonding range around a single idea: the repair should not have to wait for the treatment.
Key Benefits
- The amino acids are the part working at a real concentration: Seventeen of them appear in free form on the ingredient list, cysteine and methionine among them, which are the sulphur-bearing pair keratin is built from. Free amino acids are the smallest thing a hair fibre can take in, small enough to reach porous gaps that peptides cannot, and they sit in the ordinary body of the list rather than at trace level.
- Six forms of hyaluronic acid reach different depths: Sodium hyaluronate, a crosspolymer, a hydrolysed form, a cationic form, hyaluronic acid itself and an acetylated form. The larger ones hold a film of water on the outside of the strand and the smaller ones bind at the cuticle, so hydration is not sitting at one level and evaporating from there. Hydrolysed glycosaminoglycans sit with them doing similar work.
- The three hydrolysed proteins are declared at 750 ppb apiece: Soy, wheat and corn, at 750 parts per billion each on the Korean label. That is the brand's own figure and it is worth reading in context: at that level the proteins are a signature rather than the mechanism, and the repair story here rests on the free amino acids and the hyaluronic acid system underneath them.
- Fermenting chlorella makes its antioxidants easier for the scalp to take up: Fermentation breaks the algae's polysaccharides and peptides into smaller, more available fragments, which is what puts a scalp-side benefit into a formula otherwise pointed at the hair shaft.
Texture & Finish
It lathers readily and rinses out completely, and wet hair afterwards feels grippy and slightly rough rather than slippery, which is what amino acids and protein sitting on a porous cuticle feel like. Dried, the hair has body in it and holds a shape instead of falling soft. Violet Muguet is a soft green floral, violet over lily of the valley, and it is the single fragrance across the Protein Bonding range rather than a choice between variants.
Ideal For
- Hair types: Medium to coarse hair at high porosity, bleached, colour-treated or chemically processed, across wavy, curly and coily patterns; fine hair suits it too, though not necessarily at every wash.
- Hair concerns: Breakage, elasticity loss, hair that swells and goes limp when wet, dryness returning within a day, and colour-treated lengths that have lost their bounce.
- Best used by: If a treatment leaves your bleached hair feeling rebuilt for a day and back to square one by the next wash, this is the step in the routine worth changing first.
FAQ
Q: How is a protein bonding shampoo different from a maleic acid bond builder?
A: Bond builders based on maleic acid derivatives work by forming new links across the sites where bleach has broken the hair's disulphide bonds. That chemistry is real, but the links it forms are not the original bonds and they are largely temporary, which is why those systems are used again at every service. This shampoo does something different: it deposits free amino acids and hydrolysed protein into the shaft, replacing lost material rather than bridging broken bonds, so the effect accumulates gradually with repeated washes instead of resetting each time.
Q: Are the proteins in here at a level that does anything?
A: The honest answer is that the amino acids are and the proteins are a much smaller part of it. KUNDAL declare the hydrolysed soy, wheat and corn at 750 parts per billion each, which is a trace inclusion, while the seventeen free amino acids sit in the main body of the list at ordinary levels. If you are choosing this for the amino acid content and the hyaluronic acid system, it delivers; if you are choosing it for the hydrolysed proteins specifically, the number on the label is worth knowing first.
Q: Do I still need a conditioner or treatment after this?
A: Yes, but not a matching one. A shampoo cannot leave slip on the lengths, because the surfactants that clean also remove the coating that makes hair comb through, so a conditioner of some kind still belongs in the routine. What changes is that the wash is no longer a purely subtractive step, so whatever follows it starts from a better place.
The interesting thing about a protein shampoo is not what it adds, but that the wash stops being the step you spend the rest of the routine undoing.
Explore more
Shop our damaged hair edit, browse all hair care, or see more from KUNDAL.
Skin-Nomad's Take — At a Glance
- Seventeen free amino acids and six forms of hyaluronic acid
- Hydrolysed soy, wheat and corn protein, declared at 750 ppb each
- Violet Muguet scent, a single signature fragrance for the range
If your hair is bleached or heavily processed, the wash is the step doing the most damage and the least about it. The KUNDAL Protein Bonding Shampoo Violet Muguet loads that step with seventeen free amino acids and six molecular forms of hyaluronic acid, so material goes back into the shaft while the surfactants are taking oil off it. KUNDAL, a Seoul brand founded in 2019, built its Protein Bonding range around a single idea: the repair should not have to wait for the treatment.
Key Benefits
- The amino acids are the part working at a real concentration: Seventeen of them appear in free form on the ingredient list, cysteine and methionine among them, which are the sulphur-bearing pair keratin is built from. Free amino acids are the smallest thing a hair fibre can take in, small enough to reach porous gaps that peptides cannot, and they sit in the ordinary body of the list rather than at trace level.
- Six forms of hyaluronic acid reach different depths: Sodium hyaluronate, a crosspolymer, a hydrolysed form, a cationic form, hyaluronic acid itself and an acetylated form. The larger ones hold a film of water on the outside of the strand and the smaller ones bind at the cuticle, so hydration is not sitting at one level and evaporating from there. Hydrolysed glycosaminoglycans sit with them doing similar work.
- The three hydrolysed proteins are declared at 750 ppb apiece: Soy, wheat and corn, at 750 parts per billion each on the Korean label. That is the brand's own figure and it is worth reading in context: at that level the proteins are a signature rather than the mechanism, and the repair story here rests on the free amino acids and the hyaluronic acid system underneath them.
- Fermenting chlorella makes its antioxidants easier for the scalp to take up: Fermentation breaks the algae's polysaccharides and peptides into smaller, more available fragments, which is what puts a scalp-side benefit into a formula otherwise pointed at the hair shaft.
Texture & Finish
It lathers readily and rinses out completely, and wet hair afterwards feels grippy and slightly rough rather than slippery, which is what amino acids and protein sitting on a porous cuticle feel like. Dried, the hair has body in it and holds a shape instead of falling soft. Violet Muguet is a soft green floral, violet over lily of the valley, and it is the single fragrance across the Protein Bonding range rather than a choice between variants.
Ideal For
- Hair types: Medium to coarse hair at high porosity, bleached, colour-treated or chemically processed, across wavy, curly and coily patterns; fine hair suits it too, though not necessarily at every wash.
- Hair concerns: Breakage, elasticity loss, hair that swells and goes limp when wet, dryness returning within a day, and colour-treated lengths that have lost their bounce.
- Best used by: If a treatment leaves your bleached hair feeling rebuilt for a day and back to square one by the next wash, this is the step in the routine worth changing first.
FAQ
Q: How is a protein bonding shampoo different from a maleic acid bond builder?
A: Bond builders based on maleic acid derivatives work by forming new links across the sites where bleach has broken the hair's disulphide bonds. That chemistry is real, but the links it forms are not the original bonds and they are largely temporary, which is why those systems are used again at every service. This shampoo does something different: it deposits free amino acids and hydrolysed protein into the shaft, replacing lost material rather than bridging broken bonds, so the effect accumulates gradually with repeated washes instead of resetting each time.
Q: Are the proteins in here at a level that does anything?
A: The honest answer is that the amino acids are and the proteins are a much smaller part of it. KUNDAL declare the hydrolysed soy, wheat and corn at 750 parts per billion each, which is a trace inclusion, while the seventeen free amino acids sit in the main body of the list at ordinary levels. If you are choosing this for the amino acid content and the hyaluronic acid system, it delivers; if you are choosing it for the hydrolysed proteins specifically, the number on the label is worth knowing first.
Q: Do I still need a conditioner or treatment after this?
A: Yes, but not a matching one. A shampoo cannot leave slip on the lengths, because the surfactants that clean also remove the coating that makes hair comb through, so a conditioner of some kind still belongs in the routine. What changes is that the wash is no longer a purely subtractive step, so whatever follows it starts from a better place.
The interesting thing about a protein shampoo is not what it adds, but that the wash stops being the step you spend the rest of the routine undoing.
Explore more
Shop our damaged hair edit, browse all hair care, or see more from KUNDAL.
