In Westmead, the Keratin Treatment professionals listed here also serve the nearby towns of Merrylands, North Parramatta, Girraween, Granville. Contact any of them directly on WhatsApp — no middleman, no commission.
About Keratin Treatment
How Much the Service Costs and Why
Home visits for short hair range from $150 to $250, while hair past the shoulders costs between $250 and $450. Price varies with the keratin brand used, hair length, and the travel fee the professional charges. Always request a written quote before booking.
How to Prepare Your Hair Before the Visit
Wash your hair 24 hours before the appointment with a sulfate-free clarifying shampoo. Do not apply conditioner, oils, or styling products that day. Arriving with clean, dry hair helps the solution bond correctly during the flat-iron seal.
Average Duration of Results on Different Hair Types
On fine, straight hair, results usually last between 2 and 4 months. On thick, wavy, or curly hair, the smoothing effect often lasts from 4 to 6 months. Frequent washing, chlorine, and salt water shorten the lifespan of the coating within days.
Compatibility with Color-Treated or Bleached Hair
Keratin can be applied over colored hair, but timing matters. Wait at least 2 weeks after any chemical service, including dye, bleach, or highlights. Bleached hair tends to absorb more product and may darken slightly after treatment. A strand test on 10 hidden hairs is worth doing before committing to a full head.
First 72 Hours After Treatment: Locking the Coating In
Do not wash, tie, clip, or tuck hair behind the ears for 72 hours. Avoid ponytail elastics, caps, and pillow folds that leave marks. Sleep on a silk or satin pillowcase to reduce friction. Skip gym sweat and rain. The keratin film is still soft and any crease pressed into it becomes permanent.
Active Ingredients Commonly Used and What to Ask the Pro
Traditional formulas contain formaldehyde or methylene glycol, which release gas during ironing. Newer versions use glyoxylic acid or cysteine derivatives. Ask the professional which system they carry, request the safety data sheet, and confirm the formaldehyde level stays under 0.2% if you want the gentler option.
What a Keratin Treatment Actually Changes in the Hair Shaft
A keratin treatment coats each strand with a protein film that fills gaps in the cuticle. The coating is sealed with a flat iron at around 230°C. Hair looks straighter and reflects more light because the surface is smoother. The effect is cosmetic, not structural, so the original curl pattern returns as the coating washes out over time.
Compatibility with Colored or Bleached Hair
Keratin treatments can be applied over color, but bleaching within 7 days weakens the cuticle and raises break-off risk. Wait at least 2 weeks after any chemical service before booking. Use a protein mask 5 days before the appointment to reinforce strands.
Aftercare Routine for the First 72 Hours
Do not wash, tie up, or tuck your hair behind your ears for the first 72 hours. Sleep on a silk pillowcase and avoid ponytail elastics. After day 3, switch to sodium-free shampoo and conditioner to protect the keratin seal.
Products Used and What to Ask About Them
Most kits rely on formaldehyde or glyoxylic acid as the active straightening agent. Ask the professional for the exact brand, the percentage of active ingredient, and the safety data sheet. If you are pregnant or have respiratory issues, request a formaldehyde-free formula.