CIDESCO Theory study materials
CIDESCO Theory study resources

CIDESCO Theory: Skin Care & Facial Treatments

CIDESCO Theory · Work through your exam, one topic at a time.

All guide sections

Skin Care & Facial Treatments

Assessment before action

A facial is a sequence of decisions, not a ritual. Begin with consultation and skin analysis: observe pore size, oiliness, texture, hydration, sensitivity, vascularity and pigmentation, and record Fitzpatrick phototype (I–VI) to judge UV and treatment risk. Classify skin as normal, dry, oily, combination or sensitive, and note any medical contraindication.

The treatment sequence

Cleanse (double cleanse if make-up or heavy product), tone, exfoliate, steam, extract, massage, mask, protect. Each stage has limits: steam at roughly 30–40 cm for 3–5 minutes (longer risks dehydration and capillary damage); extraction of open comedones only - never pustules, papules, moles or broken skin.

Product science

Healthy skin sits at about pH 4.5–5.5 (the acid mantle). Know the action of alpha-hydroxy acids, retinol, vitamin C, niacinamide, clay, hyaluronic acid and physical versus enzymatic exfoliants. Masks are setting (clay, peel-off) or non-setting (cream, gel, sheet); choose by skin need, not habit.

Electrical facials

High frequency (antibacterial, warming), galvanic (desincrustation and iontophoresis), microcurrent and ultrasound each have indications and hard contraindications - pacemakers, epilepsy, pregnancy, metal implants, active infection.

Traps

Questions target the difference between a contraindication and a precaution, the correct order of the sequence, and the assumption that "more steam means better results". Also watch for masks being left on "until completely dry" - that draws moisture out.

Rule of thumb

If it is inflamed, infected, broken or undiagnosed, do not massage it, extract it or apply heat. Cleanse, protect and refer.