Brazil Protein SOS Protein Mask 500 g is the intensive protein reconstruction mask for damaged, over-processed hair, built around silk amino acids that help fill and condition weakened lengths. It is the rescue step of the routine: worked into the mid-lengths and ends after washing, it leaves fragile, chemically-treated hair feeling stronger, softer and easier to manage.
- What it is: The intensive protein reconstruction mask for damaged, over-processed hair
- Hero: Silk amino acids to help fill and condition weakened lengths
- Hair type: Dry, chemically-treated, bleached or heat-stressed hair that needs a protein boost
- How it works: A rich mask worked into the mid-lengths and ends, then rinsed
- Format: 500 g jar, professional and home use
Why the reconstruction mask
Colour, bleach, smoothing and heat all leave the hair weaker and more porous over time, and porous lengths feel dry, rough and hard to manage. This mask is the intensive step for that. It carries silk amino acids that help fill and condition the weakened cuticle, in a rich conditioning base that coats the lengths and adds slip. Worked through the mid-lengths and ends and left a few minutes, it gives over-processed hair a concentrated dose of protein and moisture, so it feels stronger and softer after rinsing.
Key ingredients
- Silk amino acids: the named protein that helps fill and condition weakened, porous lengths.
- Rich conditioning base: coats the hair and adds slip, so damaged lengths detangle and feel softer.
- Emollient complex: smooths the surface of the hair for a conditioned, manageable finish.
What to expect
Hair comes out of the mask softer, smoother and easier to comb, with lengths that feel stronger and less rough. It is an intensive protein treatment, not a smoothing step: it conditions and reinforces the feel of the hair, it does not straighten it or change its structure. Use it as the weekly or twice-weekly deep step, and follow with a leave-in or oil on the ends if the hair is very dry.
Who it is for
- Dry, chemically-treated or bleached hair that feels weak, rough or over-processed
- Hair kept between colour, smoothing or keratin services that needs a regular protein boost
- Heat-stressed lengths and ends that need conditioning and a stronger feel
- Salons offering an intensive take-home reconstruction step alongside a service
Who it is not for
- Fine, healthy hair with no damage, where a rich protein mask can feel heavy
- Anyone wanting the smoothing itself: that is a salon Brazil Protein service
- A quick daily conditioner: this is the intensive step, not the everyday one
- Rushing it on: press the mask through the most porous mid-lengths so it works where the hair needs it.
Professional tip
After washing, squeeze the excess water out before applying, so the mask is not diluted on the hair. Concentrate it on the mid-lengths and ends, where the hair is most porous, and comb it through for even coverage. Leave it a few minutes so the silk amino acids and conditioning base can settle, then rinse. On very damaged hair, alternate it with a lighter conditioner so the routine stays balanced.
How to use
- Wash the hair and squeeze out the excess water.
- Work the mask through the mid-lengths and ends, combing for even coverage.
- Leave it a few minutes, then rinse well.
- Use as the weekly or twice-weekly deep step, following with a leave-in or oil if needed.
Where it fits in your routine
The SOS Protein Mask is the intensive reconstruction step of the Brazil Protein routine, the deep treatment for the days when damaged hair needs more than a conditioner. Pair it with the SOS Protein Fluid as a leave-in on the ends, and finish with a little Mix Brazilian Oil for shine. For everyday washing between deep treatments, the Day by Day Home Care Duo keeps the hair soft.
In short
- The intensive protein reconstruction mask for damaged, over-processed hair.
- Built around silk amino acids that help fill and condition weakened lengths.
- A deep weekly step, not a smoothing treatment or a daily conditioner.
- 500 g jar, professional and home use.
Complete the routine
- Brazil Protein SOS Protein Fluid 300 ml: a leave-in silk-protein fluid for the lengths and ends between masks
- Brazil Protein Mix Brazilian Oil 60 ml: an argan finishing oil to seal shine on dry ends
- Brazil Protein Day by Day Home Care Duo: the gentle daily wash and conditioner between deep treatments
Frequently asked questions
What does the mask do?
It is an intensive protein reconstruction mask for damaged, over-processed hair. It carries silk amino acids that help fill and condition the weakened cuticle, in a rich base that coats the lengths and adds slip. Worked into the mid-lengths and ends and left a few minutes, it gives fragile hair a concentrated dose of protein and moisture, so it feels stronger and softer after rinsing.
How often should I use it?
Use it as the weekly or twice-weekly deep step, depending on how damaged the hair is. Very over-processed hair can take it more often, while healthier hair needs it less. Between masks, use a lighter conditioner or the SOS Protein Fluid as a leave-in. It is the intensive step, so it does not replace the everyday wash and conditioner.
Who is it best for?
Dry, chemically-treated, bleached or heat-stressed hair that feels weak, rough or over-processed, and hair kept between colour, smoothing or keratin services that needs a regular protein boost. On fine, healthy hair with no damage, a rich protein mask can feel heavy, so keep it to the ends there or reach for a lighter conditioner instead.
Does it straighten or smooth hair?
No. It is an intensive protein treatment, not a smoothing step. It conditions and reinforces the feel of the hair and helps it detangle, but it does not straighten it or change its structure. The smoothing itself is a salon Brazil Protein service; this mask is the reconstruction step that keeps damaged hair in better condition around it.
How do I get the most from it?
Squeeze the excess water out after washing so the mask is not diluted, then concentrate it on the mid-lengths and ends where the hair is most porous, and comb it through. Leave it a few minutes before rinsing. On very damaged hair, alternate it with a lighter conditioner. As with any professional product, read the pack and patch test on sensitive scalps.
Need help with your order? See our customer service centre and online-shopping FAQ for delivery, payment and returns.
Brazil Protein SOS Protein Mask 500 g
The intensive protein reconstruction mask for damaged, over-processed hair, built around silk amino acids that help fill and condition weakened lengths. Pair it with the leave-in fluid below.









