The CoLaz blog
Honest writing on aesthetic treatments,
from the clinicians who deliver them.
Practical guides to laser, skin, body, injectables and wellness, what treatments actually do, what they cost in real terms, what to expect from a session, and how to tell if a clinic is being straight with you.
More from the team
Injectables · 27 May 2026 · 8 min
Anti-wrinkle injections: how many units do you actually need?
The honest answer ranges from about 20 to 60 units across the upper face. Here is how units actually map to muscles, why men need more, and how a CoLaz clinician decides yours.
Wellness · 27 May 2026 · 8 min
B12 injections: who actually needs them and how often?
B12 injections are the standard NHS treatment for proven vitamin B12 deficiency, not a routine wellness boost. Here is who really needs them, at what frequency, and how we approach them at CoLaz.
Hair removal · 27 May 2026 · 7 min
Brazilian laser hair removal: what to expect from your first session
A first-timer guide to Brazilian laser hair removal: preparation, what actually happens in the treatment room, the realistic pain level, the 48-hour aftercare, and the typical course of sessions.
Skin · 27 May 2026 · 7 min
Dermaplaning aftercare: what to use and what to avoid
Dermaplaning removes the top layer of dead skin, so your face is briefly more sensitive to sun, heat and active ingredients. Here is the realistic aftercare guide we give every CoLaz patient.
Skin · 27 May 2026 · 8 min
Do chemical peels work for acne scars?
Chemical peels can soften acne scars, but the scar type decides the peel. TCA, glycolic and salicylic peels each suit different scars, and a combination plan usually beats a single treatment.
Body · 27 May 2026 · 8 min
Does fat freezing actually work?
Cryolipolysis reduces a treated fat pocket by about 15 to 28% per cycle in published trials. It is contouring, not weight loss. Here is the honest evidence at CoLaz.
Hair removal · 27 May 2026 · 7 min
How long after laser hair removal can I tan?
Two weeks is the minimum gap after a laser session before any tanning, and the same rule runs across the entire course. Here is the reasoning, the risks, and how we plan summer at CoLaz.
Injectables · 27 May 2026 · 8 min
Dermal fillers: how long do they actually last?
Six to eighteen months is the typical window for hyaluronic acid fillers, but lips, cheeks, jawline and metabolism each pull that figure in different directions. Here is what the evidence actually says.
Body · 27 May 2026 · 8 min
How many ultrasound cavitation sessions for visible inch loss?
Six to ten sessions is the typical course for visible circumference change, but the result depends on the area, the technology and what you do between sessions. Here is how we plan ultrasound cavitation at CoLaz.
Hair removal · 27 May 2026 · 7 min
How many sessions does laser hair removal take?
Six to eight sessions is the typical course, but the real answer depends on your hair cycle, the area you are treating, and your hormones. Here is how we plan it at CoLaz.
Aesthetics · 27 May 2026 · 9 min
How to choose an aesthetic clinic in the UK: 10 things to check
The UK aesthetic industry is largely unregulated. Here are the 10 things any patient should check before they book a treatment, from JCCP and Save Face registers to written consultation policy.
Skin · 27 May 2026 · 8 min
IPL skin rejuvenation: what it treats and what it does not
IPL is excellent for sun spots, broken capillaries and rosacea redness, and weak for deep wrinkles, sagging or darker skin tones. Here is the honest scope of what IPL skin rejuvenation can and cannot do.
Body · 27 May 2026 · 8 min
Lemon Bottle fat dissolving: what it is and is it safe?
Lemon Bottle is one of the most talked-about fat dissolving injectables in the UK, and one of the most controversial. Here is what it actually contains, why the GPhC and overseas regulators have warned about it, and the position we take at CoLaz.
Skin · 27 May 2026 · 8 min
Microneedling vs Dermapen: what is the difference?
Dermapen is one specific automated pen device; microneedling is the whole category. The difference is in needle motion, depth control, hygiene and what we use them for at CoLaz.
Aesthetics · 27 May 2026 · 8 min
PDO thread lift vs surgical face lift: what is the difference?
A PDO thread lift gives a subtle lift for 12 to 24 months without surgery; a surgical face lift gives a dramatic lift for 7 to 10 years. Here is the honest comparison.
Skin · 27 May 2026 · 8 min
Profhilo before and after: realistic results timeline
Two sessions, four weeks apart, with peak results around weeks 8 to 12. Here is what the Profhilo before and after timeline actually looks like, week by week, and how we plan it at CoLaz.
Hair loss · 27 May 2026 · 8 min
PRP for hair loss: how many sessions and how long do results last?
Three to four initial PRP sessions, then a top-up every three to six months, is the standard protocol. Here is what the published trials show and how we plan a PRP course at CoLaz.
Wellness · 27 May 2026 · 8 min
What do IV vitamin drips actually do for you?
IV vitamin drips deliver fluids and nutrients straight to the bloodstream, bypassing the gut. The honest answer about what they do, what the evidence says, and how we approach them at CoLaz.
Skin · 27 May 2026 · 8 min
What does Hydrafacial actually do for your skin?
Hydrafacial is a three-step device facial using salicylic and glycolic acids, gentle suction and a hydrating serum. Here is what each step does, what the clinical evidence shows, and how it sits next to peels and microneedling.
Hair removal · 27 May 2026 · 8 min
Why does my chin hair keep coming back after waxing?
Waxing removes hair from the surface but leaves the follicle alive, and the chin is the area most likely to be driven by hormones. Here is what is really going on, and what works long-term.
Hair loss · 27 May 2026 · 8 min
Why is my hair thinning? Causes and the treatments that actually help
Hair thinning has more than one cause, and the right treatment depends on which cause is yours. Here is how the main types differ and the UK treatments that work for each.
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