Which lasers are safer in types IV to VI, and which need the most care, is set out on the laser for dark skin guide.
Genital skin is usually a shade or two darker than the type recorded for the body, which matters for brazilian laser hair removal.
Published 13 October 2026 · Reviewed by Dr Sin Yong
Fitzpatrick skin type is a six-grade classification of skin by how it responds to ultraviolet light, from type I, which always burns and never tans, to type VI, which is deeply pigmented and rarely burns. Fitzpatrick types III to V cover most patients in Singapore. The grade matters in aesthetic medicine because more epidermal melanin absorbs stray laser energy, and inflammation after treatment is what drives post-inflammatory hyperpigmentation.
Key facts
Grades
I to VI, from always burns and never tans to deeply pigmented and rarely burns
Singapore
Types III to V cover most patients seen here
Why it matters
More epidermal melanin absorbs stray energy; heat and inflammation can darken the skin afterwards
What changes
Wavelength, fluence, spot size, pulse width and the interval between visits
Where Fitzpatrick type matters on this site
Beyond the laser pages named elsewhere in this entry, the Fitzpatrick grade decides settings and sequencing on several treatment pages where heat, inflammation or resurfacing are involved.
A higher Fitzpatrick type changes the settings, not the answer; what it rules out is treating every skin the same way.— Dr Sin Yong
On each of those pages the grade is recorded at consultation and revisited at every visit, because a recent tan or a new patch of pigment changes the settings, and the plan is adjusted rather than repeated.
Not to be confused with
The Fitzpatrick grade is a narrow measure, and several other descriptions of skin are confused with it.
Ethnicity. The grade describes how skin responds to ultraviolet light, not ancestry. People of the same background can fall in different types.
Oily, dry or sensitive skin. These describe how the skin behaves day to day. The skin types and life stages guides use that sense of the word.
Melasma. A pigment condition more common in types III to V. It changes laser planning in its own right, whatever the grade.
A tan. Temporary extra melanin from recent sun. The underlying type does not change, but treatment may be deferred or adjusted until it fades.
The grade is a starting point for settings, not a verdict on whether a treatment can be done, and it is read alongside the history rather than from a photograph.
What decides how your Fitzpatrick type is used
Two people with the same grade can still need different settings. These are the other factors that are weighed.
Your burning and tanning history. How your skin has responded to sun over the years is the basis of the grade.
The area treated. Some areas, such as genital and underarm skin, are often darker than the type recorded for the body.
Previous darkening after procedures. A history of post-inflammatory marks lowers the threshold for caution.
Melasma or active acne. Both raise the pigment risk of any heat-based treatment.
The treatment itself. Wavelength, fluence, spot size, pulse width and intervals are all adjusted; a test spot is used where the response is uncertain.
Sun after treatment. Strict protection is part of the treatment rather than an add-on.
Dr Sin Yong plans his FSX Laser and R2T2 protocols for Fitzpatrick III to V, with settings chosen for the skin at every session.
Where it fits
The Fitzpatrick grade is a line that runs through every laser page on this site. On the pico laser page the settings must suit the skin because heat can darken pigment afterwards; on laser toning the 1064 nm wavelength is chosen because it is only modestly absorbed by epidermal melanin, which is what makes it workable across Fitzpatrick III to V skin; on the acne scar pages fractional CO₂ carries a higher pigmentation risk in these types and is planned for throughout. Dr Sin Yong's FSX Laser and R2T2 protocols are both planned for Fitzpatrick III to V, and FSX is used in types V and VI with settings chosen for the skin at every session. The complication the grade predicts is described under post-inflammatory hyperpigmentation.
Frequently Asked Questions
By history and examination. The doctor asks how your skin responds to sun, whether it burns, how easily it tans, and looks at the skin itself, including areas that see little sun. The grade runs from type I, which always burns and never tans, to type VI, which is deeply pigmented and rarely burns. It is recorded at consultation and reconsidered if your skin changes.
No. The type describes your skin’s constitutional response to ultraviolet light, and a tan is temporary extra melanin added to it. A recent tan does matter for treatment, because more melanin in the epidermis absorbs more stray laser energy, so a procedure may be postponed or its settings lowered until the tan has faded. Sun protection before and after treatment helps keep plans on track.
Most patients seen in Singapore fall in types III to V. That range has more melanin in the epidermis than types I and II, so laser wavelength and energy are chosen for the skin rather than applied from a fixed setting.
No. It changes the choice. Longer wavelengths such as 1064 nm, lower fluence, shorter pulses and longer intervals are used, and strict sun protection afterwards is part of the treatment rather than an add-on.
References
Syder NC, Chen A, Elbuluk N. Radiofrequency and radiofrequency microneedling in skin of color: a review of usage, safety, and efficacy. Dermatol Surg. 2023;49:489. doi:10.1097/DSS.0000000000003733 (PMID 36826381). source
Chan JC, Shek SY, Kono T, Yeung CK, Chan HH. A retrospective analysis on the management of pigmented lesions using a picosecond 755-nm alexandrite laser in Asians. Lasers Surg Med. 2016;48(1):23-29. doi:10.1002/lsm.22443. source
Laser and Light Treatments for Hair Reduction in Fitzpatrick Skin Types IV-VI: A Comprehensive Review of the Literature. PubMed. pubmed.ncbi.nlm.nih.gov
Review of Laser Treatments for Post-Inflammatory Hyperpigmentation in Skin of Color. PubMed. pubmed.ncbi.nlm.nih.gov
