Cold Perm

What is a cold perm?

A cold perm, also known as a cold wave perm or Korean cold perm, uses a chemical solution at room temperature to create curls. Unlike digital perms that use heated rods, cold perm relies entirely on chemistry to create a new curl pattern.

The result is tighter, more defined curls compared to the soft, loose waves of a digital perm. Cold wave perm curls look their most defined when damp and can be styled into structured, voluminous looks with minimal effort.

Korean stylists have refined this Korean perm technique with careful rod selection and solution timing to create natural-looking texture rather than outdated tight ringlets. At Miin, your stylist tailors the rod size, placement, and processing time to your hair's unique characteristics.

Cold perm vs digital perm

Choosing between cold perm and digital perm comes down to the curl style you want and your hair length.

• Cold perm — no heat, tighter curls, looks best damp or styled with product. Lasts 3–6 months. Works well on short to medium hair. Faster appointment (around 2 hours). More affordable.
• Digital perm — uses heated rods, softer and looser curls, looks best dry. Lasts 6–12 months. Better for medium to long hair. Longer appointment (around 3 hours).
• If you want smooth roots with curled ends — choose magic setting perm, which combines volume rebonding on top with digital perm at the ends.

What styles can you achieve?

Cold perm is more versatile than most people expect. The curl pattern depends on rod size, wrapping technique, and placement — not just the chemical solution.

Tight, structured curls — smaller rods create defined ringlets for a bold, textured look. Works especially well on shorter hair.

Volume waves — larger rods work as a volume perm, producing soft body and bounce without tight curls. Good for adding movement to flat, straight hair.

Root volume — rods placed at the roots only to lift flat areas and create natural-looking volume at the crown. Subtle but effective.

Your stylist will discuss what's achievable based on your hair length, thickness, and the look you're after.

What to expect during your appointment

A cold perm appointment is faster than a digital perm because there's no heat processing step.

1. Consultation (10–15 min) — Your stylist assesses your hair type, condition, and desired look. Together you decide on rod size, curl placement, and intensity.
2. Preparation — Hair is washed and sectioned. A scalp protector is applied to shield the scalp.
3. Rod wrapping — Hair is wound around perm rods in the pattern mapped during consultation. Rod size determines curl tightness.
4. Solution application (20–30 min) — The cold perm solution is applied to the wrapped rods and left to process at room temperature. Your stylist monitors timing carefully.
5. Neutralising — A neutraliser locks the new curl pattern. Rods are removed and hair is gently rinsed.
6. Styling — Your stylist shows you how to dry and style your new curls for the best results at home.

Who is cold perm best for?

Cold perm suits a wide range of hair types and is particularly effective for:

• Short to medium hair (chin-length to shoulder) — cold perm curls work well at shorter lengths where digital perm rods can't wrap
• Thick or coarse hair — the perm solution works well on thicker hair and creates lasting structure
• Fine hair needing volume — cold perm adds body and lift that lasts longer than styling alone
• Anyone wanting defined, bouncy curls rather than the soft waves of a digital perm
• Tighter budget — cold perm is more affordable than digital perm while still delivering lasting results

How long does a cold perm last?

A cold perm typically lasts 3–6 months. The curls gradually relax over time as new hair grows in straight at the roots.

Longevity depends on hair health, thickness, aftercare, and how often you heat-style. Thicker hair tends to hold cold perm curls longer. Proper aftercare with curl-friendly products can push results toward the 6-month mark.

To maintain your curls' definition, we recommend a moisture treatment like Miin Express every 4–6 weeks. This replenishes moisture stripped during the chemical process and keeps curls springy.

Aftercare: keeping your curls defined

Cold perm curls need slightly different care than digital perm waves. Here's how to keep them looking their best in Singapore's climate.

• Wait 48 hours before washing your hair after the perm
• Use a sulphate-free shampoo and a moisture-rich conditioner
• Apply a curl-defining mousse or foam on damp hair to enhance curl shape
• Use a wide-tooth comb or fingers to detangle — brushes pull curls out of shape
• Avoid heavy silicone products that weigh curls down — go lightweight in Singapore's humidity
• Use a diffuser on low heat to dry, or scrunch and air-dry
• Use a hair mask at home weekly, and book a deep conditioning treatment every 4–6 weeks to maintain moisture balance

How long does the appointment take?

A cold perm at Miin takes around 2 hours — noticeably faster than a digital perm. For very thick or long hair, allow up to 2.5 hours. Your stylist will confirm the expected time during consultation.