Obagi ranges explained: Nu-Derm, ELASTIderm and Professional-C

Most people arrive at Obagi knowing the name and nothing else.

They have heard it in a clinic, or seen it in a friend's bathroom, and they know it is meant to be serious. What nobody tells them is that Obagi is not one product. It is a set of ranges built to do different jobs, and the difference between the right one and the wrong one is the difference between a year of real progress and an expensive box you abandoned in week three.

I see the second version more often than the first. Usually because somebody sold a system to a skin that needed one product.

So this is not a brand piece. It is how I decide, written down.

Who Obagi is for, and who it is not for

I use Obagi when there is something specific to correct and someone prepared to be consistent for a year. Uneven pigment. Dullness. Loss of firmness around the eyes. Sun damage banked over decades. The actives are present at percentages that ask something of the skin, and they are honest about that.

There are three situations where I say no. A compromised barrier. Diagnosed rosacea or a strongly reactive skin. Pregnancy or breastfeeding. In the first two the work is calming and repairing, and correction comes later or not at all. In the third, the retinoid-containing products are contraindicated and stop.

There is a fourth, and I will say it plainly. Sometimes the honest answer is that you do not need this. If your barrier is intact, you wear sunscreen and your skin is behaving, a corrective system is not an upgrade. It is an expense. Choosing not to treat something is a legitimate choice and I respect it out loud.

If you are unsure which of those you are, that is what a consultation is for. Diagnosis matters more than ingredients, and Obagi is the clearest example of why.

The four Obagi ranges at a glance

The whole catalogue sits under Obagi Medical.

Nu-Derm: the pigment and tone system

Nu-Derm is what Obagi is known for, and the range most often bought for the wrong reason.

It is a system, not a product. The steps are designed to work in sequence: cleanse, tone, correct, exfoliate, protect. Used that way it addresses the appearance of uneven pigment and rough, weathered texture. Bought as a single cream picked out of the box because it looked like the important one, it does very little.

What is in the NU-DERM Fx system

The Fx version is the hydroquinone-free formulation, built around arbutin and vitamin C for tone rather than a skin-lightening agent. Two consequences. It is available in the UK without a prescription, and it is a gentler introduction than the original formulation.

The system pairs a gentle cleanser and toner with the corrective steps and Exfoderm Forte for resurfacing.

Now the money, because I would rather say it than let you find out. The full system is £524. A system lasts most people somewhere between three and five months depending on how heavy-handed they are, so a committed year is realistically £1,200 to £1,800 once sunscreen is included. That is a considerable sum and it buys a genuine change in the appearance of pigment and texture. It does not buy a new face.

If that number is the barrier, start with the cleanser and one corrective step. A partial routine used for a year beats a full system used for six weeks. It is not close.

Retinisation: what is normal, what is not, and how long it lasts

This is where most Nu-Derm journeys end early, so it deserves plain language.

Introducing a retinoid-containing regimen puts the skin through an adjustment phase, commonly called retinisation. Expect dryness, flaking, mild redness, a tight or sensitive feeling. It usually settles within two to six weeks. It is not an allergy and it is not a sign the product is wrong for you.

What is not normal: swelling, weeping, blistering, redness spreading beyond the treated area, or pain. That needs a clinical opinion, not perseverance.

The things that shorten the phase are unglamorous and they work. One product at a time, not five. Two or three nights a week before going nightly. Buffer with a moisturiser. Do not exfoliate on top of it. Wear sunscreen every day, because a resurfacing regimen without SPF is work done and then undone.

Who it suits, and who should not start here

Nu-Derm suits established, visible pigmentation or photoageing on a skin that has already handled actives without drama.

It is the wrong starting point for reactive skin, for anyone mid-flare with rosacea, and for anyone who does not yet have a barrier and a sunscreen habit in place. I recommend a consultation before starting Nu-Derm. I say that about very few products.

ELASTIderm: elasticity, eyes, neck and décolletage

The skin around the eyes, on the neck and across the décolletage is thinner, moves more, and loses its spring earlier than the rest of the face. ELASTIderm is built for that, around a bi-mineral complex and malonic acid, formulated for firmness rather than pigment.

It is also the easiest Obagi range to tolerate. If you want to try the brand without an adjustment phase, start here.

Eye Cream, Facial Serum or Neck and Décolleté Concentrate

The Eye Cream at £115 has the widest audience: crepey texture and loss of firmness around the orbital area. The Facial Serum at £174 takes the same thinking across the face and layers under a moisturiser. The Neck and Décolleté Concentrate at £179 is for the area almost everyone under-treats and later regrets.

I mention the last one most often to women who have looked after their face diligently for twenty years and stopped at the jawline. It is not a criticism. Nobody told them.

Pick one. Do not buy all three.

Professional-C: 10%, 15% or 20% L-ascorbic acid

Professional-C is the morning antioxidant step and the most useful thing in the Obagi line. L-ascorbic acid is the most studied form of vitamin C, it supports the skin's defence against environmental stress, and over time it helps improve the appearance of dullness and uneven tone.

How to pick your strength, and why higher is not better

Three strengths exist because three different skins exist. Not because one is the premium version.

• 10% at £115: a first vitamin C, or skin that runs sensitive.

• 15% at £133: the middle option, and where I put most people.

• 20% at £156: for skin that has already been comfortable at a lower percentage.

A higher percentage of L-ascorbic acid means a lower pH and a higher chance of stinging, and past a point the benefit flattens while the irritation does not. On reactive skin, 20% is not ambition. It is a bottle you will stop using. There is more in our guide to vitamin C strength and form.

The supporting ranges: Obagi-C Fx, CLENZIderm, Retivance and Retinol

These are additions, not starting points.

Obagi-C Fx is the lighter route to tone than Nu-Derm. The Clarifying Serum at £132 is the useful single purchase.

CLENZIderm is for oily, congested skin, built around salicylic acid and benzoyl peroxide.

Retivance at £170 (here) uses retinaldehyde. Retinol 1.0 at £87 is the straightforward retinol. If you are choosing between them, retinol vs retinal has the distinction. Both are contraindicated in pregnancy and breastfeeding.

Which Obagi range should you start with?

Work down this list. Stop at the first line that describes you.

1. Barrier compromised, reactive, or mid-flare with rosacea? None of them yet. Repair first. Rosacea and reactive skin, then Rebalance or Hydrate.

2. Pregnant or breastfeeding? Professional-C and Hydrate are fine. Retinoid-containing products are not.

3. No vitamin C in your routine at all? Professional-C 10% or 15%. The highest-value single addition in the range.

4. Crepiness or loss of firmness around the eyes, neck or chest? ELASTIderm Eye Cream.

5. Uneven pigment or sun damage, on resilient skin? Nu-Derm, after a consultation. If the full system is too much, the cleanser and one corrective step.

6. Oily and congested? CLENZIderm.

7. Smoother texture rather than pigment? Retivance or Retinol 1.0.

How to build an Obagi routine without overwhelming your skin

The common failure is not the wrong product. It is five right products introduced on the same Tuesday.

Start with one. Give it two to three weeks. Add the second. Keep sunscreen on every day, not only when it is sunny. Use a moisturiser you already trust rather than changing everything at once. Keep exfoliation out of it while the skin is adjusting.

If something stings for more than a few minutes, or the redness is not settling by week six, stop and ask. Overtreatment is a diagnosis and I see it far more often than under-treatment.

Two things I would leave you with. Pigment routines fail from inconsistency more often than from formulation, so choose one you will actually keep. And if you want to understand why any of this sits apart from what you can buy on the high street, what "medical grade skincare" actually means sets out the tests I apply to every brand, this one included.

Obagi is not a purchase. It is a year. Judge it on where your skin is at the end of that year, not on how it feels in week two, and do not start until you know which range is yours.

If you know, the range is here. If you do not, come and talk to me first.