How do you relax hair: essential, professional guide in 7 steps

52 8 minutos de lectura

How do you relax hair naturally: a complete guide

If you have ever wondered “how do you relax hair naturally” or simply “how do you relax hair” for a smoother, straighter look, you are not alone. Hair relaxing is a long-standing method for softening tight curls or coils and reducing volume. Whether you are considering a professional service or a thoughtful at-home routine, this comprehensive guide explains what relaxing is, who it suits, the exact steps, how to protect your hair and scalp, and safe alternatives if you prefer to avoid chemicals.

Because terminology can be confusing, we will clarify what “how do you relax hair” really means, cover product choices and timing, and show you how to maintain healthy, shiny results. Along the way you will find practical answers to common questions, tips to avoid damage, and suggestions for gentler routes if you want the look without permanent chemical change.

What does “how do you relax hair” mean?

When people ask “how do you relax hair”, they usually mean chemically straightening curly or coily hair so it lies flatter and appears straighter. A chemical relaxer softens the hair fibre by breaking and reforming some of the structural bonds inside each strand. This permanently alters the curl pattern until new growth appears at the roots.

It is important to note that while you might hear “how do you relax hair naturally”, the term “relax” in hairdressing typically refers to chemical processes. If you are looking for non-chemical ways to reduce bulk or loosen curls temporarily, we cover those too in a dedicated section below.

The science behind relaxing

Human hair gets its shape from chemical bonds within the cortex (the inner structure). Two key bond types are hydrogen bonds (temporary) and disulfide bonds (stronger, more permanent). Relaxers break a portion of these disulfide bonds, allowing hair to be straightened into a new shape before those bonds reform in a straighter configuration. This is why, when you ask “how do you relax hair” safely, timing and technique matter so much—overprocessing can cause breakage and scalp irritation.

Lye vs no-lye relaxers

Lye relaxers (typically based on sodium hydroxide) work quickly and can produce very smooth results. They often feel gentler on the hair shaft but may be harsher on the scalp.
No-lye relaxers (often using calcium hydroxide/guanidine carbonate) are popular for sensitive scalps. However, they can be more drying to the hair fibre and may create more mineral build-up, so a chelating shampoo can help.

Whichever formula you choose, the strategy for “how do you relax hair” successfully is to start with the mildest strength that delivers your desired result, always do a strand test, and follow neutralising and aftercare instructions precisely.

How do you relax hair step by step at home

Many people prefer a salon for chemical services, and a qualified stylist is the safest route. If you still want to learn “how do you relax hair” at home, proceed cautiously and consider asking a friend to help so timing is accurate. The following is a general guide; always read and follow the manufacturer’s leaflet for your specific product.

1) Preparation and strand test

Avoid scratching, brushing vigorously, or washing your hair 48 hours before; a calm scalp is less likely to be irritated.
Detangle gently and section hair into four to six parts using clips.
Coat the hairline, ears, and neck with a protective base (petroleum jelly or a product recommended by your brand). Some people lightly base their scalp too, especially with lye relaxers.
Perform a strand test on a small hidden section to check processing time, sensitivity, and the final texture. This is a crucial stage in “how do you relax hair” without surprises.

2) Application sequence

Wear gloves. Prepare the relaxer exactly as directed.
If this is your first relaxer: apply to mid-lengths and ends first, keeping about 1–1.5 cm from the scalp. Apply to the roots last, because body heat speeds processing.
For touch-ups: apply relaxer only to new growth. Do not overlap onto previously relaxed hair—this is a major rule in “how do you relax hair” with minimal damage.
Work swiftly and smoothly with the back sections first (they are cooler and need longer). Use the timing from your strand test; never exceed the maximum stated on the product.
As the relaxer processes, very gentle smoothing with the back of a comb or fingertips may be recommended by the brand. Do not pull or aggressively comb.

3) Rinsing, neutralising, and aftercare

Rinse thoroughly with lukewarm water until you feel no slip on the hair.
Shampoo with a colour-indicating neutralising shampoo as directed—usually several lathers—to restore the correct pH and stop the chemical action. This step is non-negotiable for anyone asking “how do you relax hair” safely.
Follow with a deep conditioner. Many people use a protein-rich formula first (to reinforce the hair), then a moisturising mask to restore softness. Rinse as instructed.
Air-dry or blow-dry on low heat. Avoid tight bands or heavy manipulation for a few days.

Safety first: how do you relax hair without damage

Relaxers are strong chemicals. If you are exploring “how do you relax hair” for the first time, set yourself up for success with these safety basics:

Always do a patch test on the skin (as advised on the pack) to check for allergic reactions.
Protect your scalp by avoiding washing or scratching before application.
Never mix brands or strengths. Do not add oils to the relaxer unless the instructions say so.
Stick to the timing. Overprocessing is a common reason people later ask how to fix damage from “how do you relax hair”.
Keep relaxers away from eyes and mouth. If contact occurs, rinse and seek medical advice promptly.
Children’s hair and very delicate hairlines need special care; consider professional help.

Common mistakes to avoid

Overlapping relaxer onto previously relaxed sections—this leads to breakage.
Skipping neutralising shampoo or not lathering enough times to remove residue.
Relaxing too frequently. Most people wait 8–12 weeks between touch-ups, depending on growth.
Using too much heat immediately after relaxing; hair is at its most vulnerable in the first week.

Who should think twice about relaxing?

If you have significant scalp issues, recent chemical colour, or severe dryness and breakage, it may not be the time to ask “how do you relax hair” but rather how to rebuild strength first. People who are pregnant or breastfeeding may prefer to avoid strong chemical odours or ingredients—consult a healthcare professional if unsure. If in doubt, book a consultation with an experienced stylist.

How do you relax hair naturally (without chemicals)

Strictly speaking, “relaxing” is a chemical term. However, many people who ask “how do you relax hair naturally” are really looking for ways to stretch or soften the curl temporarily. These methods do not alter internal bonds permanently, so they are gentler and wash out.

Heat stretching and blow-dry techniques

Use a heat protectant and a cool-to-medium blow-dry with tension (holding the hair taut while drying). This reduces shrinkage and frizz.
A gentle pass with a ceramic straightener at a controlled temperature can smooth further. Keep heat modest and infrequent to avoid damage.

Roller sets, banding, and twist-outs

Roller setting stretches hair without direct heat. Larger rollers create a smoother finish.
Banding (placing soft bands along damp sections) elongates curls as they dry.
Twist-outs and braid-outs redefine curls into a looser pattern with less shrinkage.

Temporary smoothing treatments

Silk press: a careful blow-dry and flat iron service that delivers sleek results until your next wash.
Keratin-style smoothing: some salon treatments reduce frizz and make hair easier to straighten for a few months. Read the ingredient list carefully and consult your stylist.

These approaches give a softer look without permanent change, which is why they are often mentioned when people search “how do you relax hair naturally”.

Maintenance: keep relaxed hair healthy

Once you have learned “how do you relax hair” and achieved your desired finish, long-term care determines whether your hair stays shiny and resilient.

Wash day routine

Cleanse weekly or as needed with a gentle sulphate-free shampoo most of the time. Use a chelating shampoo occasionally for no-lye mineral build-up.
Deep-condition every wash for the first month after relaxing; thereafter, alternate deep treatments with lighter conditioners based on your hair’s feel.
Neutralising shampoos are for immediately post-relaxer use. After that, return to your regular pH-balanced products.

Moisture–protein balance

Protein treatments support the internal structure of relaxed hair. Start with a light protein once every 2–4 weeks and adjust based on feel—too stiff means dial back.
Moisturising masks and leave-ins keep hair supple. Add a few drops of light oil to seal the ends.

Daily handling and styling

Protect ends by wrapping hair at night or using a satin bonnet/pillowcase.
Keep heat low and not daily. Consider roller sets, silk wraps, or flexi-rods for shape without stress.
Trim every 8–12 weeks to remove splits.

Exercise, swimming, and holidays

Before you swim, wet your hair and apply a light conditioner to reduce chlorine absorption. Rinse promptly after and follow with a gentle shampoo.
On sunny holidays, wear hats and consider UV-protective sprays; relaxed hair can be more sensitive to sun.

From relaxed to natural: changing direction gracefully

Sometimes you learn “how do you relax hair” and later decide to grow your natural texture again. There are two main routes:

Transitioning: stop relaxing, grow new hair, and gradually trim off the relaxed ends. Protective styles and low manipulation techniques help during the dual-texture phase.
Big chop: cut off the relaxed ends and start fresh with your natural pattern.

There is no single best method—choose what fits your lifestyle, confidence, and hair goals.

Choosing products and tools

When deciding “how do you relax hair” with minimal risk, product choice matters just as much as technique. Look for reputable relaxer brands with clear instructions. Stock neutralising shampoo, a deep conditioner (one protein, one moisturising), a wide-tooth comb, plastic clips, gloves, and a timer. A silk or satin scarf helps preserve results overnight.

On off days, reach for leave-in conditioners, lightweight oils, and heat protectants. If your relaxed hair feels rough, add moisture. If it feels overly soft and floppy, try a mild protein once and reassess.

Timing your touch-ups

A frequent question within “how do you relax hair” conversations is how often to retouch. Typically, wait until you have around 2–3 cm of new growth—often 8–12 weeks, but it varies by hair growth rate and curl pattern. The crucial rule is to relax only the new growth to avoid cumulative weakening of older lengths.

Signs you should pause and reassess

Breakage at the demarcation line, severe dryness, or scalp irritation means stop and rethink. Focus on gentle cleansing, conditioning, and trims. Seek a professional consultation to diagnose whether the issue is overlapping, incorrect timing, product strength, or general hair health.

Recommended external resources

NHS guidance on contact dermatitis from cosmetics covers signs of irritation and when to seek help—useful context for scalp safety during relaxing.
National Cancer Institute overview of chemical hair straighteners and cancer risk summarises current research so you can make informed choices.
Detailed Wikipedia overview of hair straightening and relaxing provides additional background on methods and chemistry.

Frequently asked questions about how do you relax hair

Is relaxing the same as straightening?

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