Is a Perm Right for You? Cold vs Hot Curl
By Ms So98 Hair Salon · 30 May 2026
Quick answer
A cold perm uses solution at room temperature for springy, defined curls and is gentler — good for tighter, lasting curls. A hot (digital) perm uses heat for softer, looser waves that look more natural when dry and are easy to style. Both last several months; healthy hair holds a perm best.
Perms are back — but 'cold' and 'hot' perms give different results, and the right choice depends on the curl you want and your hair's condition.
Here's a simple guide from Ms So98 Hair Salon in Phnom Penh.
Cold perm
A traditional perm done at room temperature. It creates tighter, more defined and bouncy curls that show even when hair is wet. It's gentler on hair and great if you want noticeable, long-lasting curl.
Hot / digital perm
Uses controlled heat to set softer, looser, more natural-looking waves that are most visible when hair is dry. It's popular for easy, 'wake-up-and-go' waves, though it suits hair that isn't heavily damaged.
Care and longevity
Most perms last several months as they gradually relax. Wait 48 hours before washing, use moisturising, curl-friendly products, scrunch rather than brush, and add regular treatments — perming is a chemical process, so keeping hair hydrated keeps curls looking their best.
FAQ
Which perm lasts longer?
Both last several months; cold perms often hold tighter curl longer, while hot perms relax into soft waves. Hair condition affects longevity.
Is a perm damaging?
It's a chemical service, so healthy hair holds it best. We assess your hair first and recommend treatments to keep it in good condition.
Can I perm coloured hair?
Often yes, but timing matters. We'll check your hair's condition and advise the safest order and approach.
How much is a perm at Ms So98?
Cold and hot curl perms range $40–$80, and straightening perms start at $50, depending on length and condition.
Book at Ms So98 Hair Salon
Phnom Penh · near Aeon Mall 2 (Sen Sok) · Khmer · English · 中文.