ZO Skin Health is a medical-grade skin care line developed by a dermatologist and sold through practices rather than stores. Coastal Dermatology + Aesthetics builds and adjusts ZO routines at its San Luis Obispo office for acne, melasma and sun damage. Five staff members hold ZO certification, and most ingredients take four to twelve weeks to show a change.
What a ZO routine does for your skin
Most people who try ZO have already tried a lot of things. That is who this line is for. The products carry more of the working ingredient than what you can buy in a store, and they are formulated to get it into the skin rather than to feel pleasant on the way. If nothing has moved your acne, your brown patches or your texture, the honest reason is usually that nothing you have used was strong enough to.
The trade is that stronger cuts both ways. Start a retinol wrong and you spend three weeks red and flaking and you quit, which is the story behind almost every abandoned bottle of the stuff. That is the entire reason this line is sold through practices. Someone decides which products, in which order, on which nights, and adjusts it when your skin objects.
What it treats, it treats properly. Acne that keeps coming back in the same three places. Melasma, where the daily product does more of the work than any single treatment does. Sun damage from a lifetime on this coast, which shows up as roughness and mottling long before it shows up as lines.
What a ZO routine is good at
- Acne that has not responded to anything from a counter, including the adult kind along the jaw
- Brown patches and melasma, where consistency at home is what holds a result between treatments
- The rough, mottled texture that years of Central Coast sun leaves behind
- Getting the benefit of retinol without the three weeks of peeling that make people give up
- Holding the result of a peel, a facial or a laser instead of watching it fade
- Preparing your skin so a procedure does more and settles faster
Members of our staff hold ZO certification, including a board-certified dermatologist, and four hold both the Specialist and Expert credentials. The practice also holds the highest level of ZO Circle Club status.
How we build your routine
Bring what you are already using
Bring the bottles, or photograph the labels. What is in your bathroom right now is the most useful information in the room, because a good part of the problem is usually already in there, cancelling itself out.
We build it in an order
You leave with specific products, a specific order, and which nights each one goes on. Retinol gets introduced at a pace your skin can take, and that pacing is the whole difference between a retinol that works and a retinol you abandon in week two.
We keep adjusting it
Your skin changes with the season, with treatment and with age. What was right in March is not automatically right in September, which is why this is a conversation we keep having rather than a sale we make once.
How long most of these ingredients take to show you something, and brown patches take longer still. It is also why we look at your routine again every season rather than selling you a shelf and waving you off.
What the ingredients actually do
ZO is a large line and most of it is not for you. Here are the ingredient families that do the work, and what each one is for, so you can tell what you are being handed and why.
Retinol. The one with the deepest evidence behind it. It speeds up cell turnover, which is why it improves texture, acne and sun damage all at once, and why it is also the one that makes your skin peel for a few weeks if you start it too fast. Almost every routine we build has one, at a strength chosen for your skin rather than the highest available.
Pigment ingredients. For melasma and sun spots. These work slowly and they only hold if the sunscreen holds, which is why a pigment routine without daily sunscreen is money spent on nothing.
Exfoliating acids. Salicylic and glycolic, for congestion, rough texture and clogged pores. They do not go on the same night as your retinol unless we specifically tell you they do.
Benzoyl peroxide. For inflammatory acne, the red and painful kind rather than the bumpy kind. Effective, and it bleaches towels and pillowcases, which nobody tells you at a counter.
Barrier and hydration products. The unglamorous half, and the half that decides whether you can tolerate everything above. Most people who cannot handle actives have a barrier problem, not an active problem.
Sunscreen. Non-negotiable with any of the above, because every one of these ingredients makes your skin more sensitive to light. Broad spectrum, SPF 30 or higher, water resistant. [3]
About 8 in 10 people using a prescription vitamin A cream saw their sun-damaged skin improve, against about 5 in 10 using the same cream without the active ingredient. That study looked at a prescription cream, not a ZO product. Retinol is the family it belongs to, and the gap between those two numbers is the part worth paying for. [1]
Areas we treat
Face
Where most of the routine lives: cleansing, actives, hydration and daily sun protection.
Neck and chest
The two areas that age fastest and get skipped most, and where pigment and crepiness show first.
Acne-prone skin
Products chosen to work alongside whatever medical acne treatment you are already on, not instead of it.
Pigment-prone skin
Brightening ingredients plus the daily sunscreen without which none of them hold.
Post-procedure skin
Only what is right for the stage you are at, which changes week by week after a treatment.
They are so knowledgeable and Tressa is incredible.
The Coastal difference
Stronger products, and somebody watching how you use them
Stronger products need supervision, and that is not a sales line, it is the difference between the routine working and you giving up on it in a month. Yours is built by a licensed esthetician holding ZO Expert certification, inside a practice run by board-certified dermatologists, and the person who chose it is going to see your face again. A clerk behind a counter never finds out whether it worked.
We are also straight with you about what a routine is for. It is the foundation: it keeps your skin healthy and makes every treatment you have here work better and last longer. Where a line or looseness needs a treatment, we will point you at the right one. A chemical peel on properly prepared skin behaves differently from a peel on skin that has not been prepared, and at our San Luis Obispo office the person planning the peel and the person planning the routine are in the same building and often the same person.
Is it right for you?
A ZO routine is probably a good fit if:
- You have tried a lot of things from a counter and none of them moved anything
- You are treating acne, melasma or sun damage and want the daily product pulling its weight
- You have tried retinol before and stopped because your skin could not take it
- You want somebody to tell you what to use on which night, in what order
- You are booked for a peel, a laser or microneedling and want more out of it
We will change the plan if:
- You have reacted to an ingredient before, which narrows the field and is worth knowing up front
- What you are describing needs a prescription rather than a product
- You are pregnant or breastfeeding, when retinol comes out of the routine entirely
- Your skin barrier is already damaged, in which case we repair that before adding anything strong
Not sure which of these you are? That is the consultation. Buying the products is the easy part; knowing which ones and in what order is the whole job.
How to start without wrecking your skin
One new product at a time, on the schedule we give you. Almost every bad story about a strong routine is a schedule problem rather than a product problem.
Expect an adjustment period, and do not panic in it. Dryness, flaking and some redness in the first few weeks is normal when you start a retinol. ZO calls it retinization and you will hear the word at the counter. It settles.
Sunscreen every day, not most days. These products make your skin more sensitive to sunlight, so without daily broad-spectrum sunscreen, SPF 30 or higher, the routine is working against itself. [3]
Do not use a retinol and an exfoliating acid on the same night unless we have specifically told you to.
Pause around treatments. Retinol usually comes out for a few days before and after a peel, a laser or microneedling. Ask for the window and we will give it to you in days rather than in vague terms.
Tell us if it stings. Not everything that stings is wrong and not everything wrong stings. We would far rather adjust the plan than have you quietly stop.
Concerns treated
ZO is where the daily routine does real clinical work rather than sitting alongside it. Pick a concern to see how we approach it.
What it costs
Products are priced individually and you can restock without an appointment. A starting routine is usually three to five products rather than fifteen, and we would rather send you home with three you will finish than eight you will not.
We build the shortest routine that gets you the result. If what you need is two things, you leave with two things.
Routine time
A few minutes, morning and evening
Downtime
None, though strong actives cause an adjustment period
Results appear
Weeks to months, depending on the concern
Results last
For as long as you keep the routine going
ZO® Skin Health frequently asked questions
Advanced science courses in the ZO certification program, about 40 hours of training in total. It is the reason the person handing you a retinol here can tell you what to do when your skin reacts to it.
Offered at
Ready to start? Request your consultation
Fill out the form below, book online in Santa Maria (opens online scheduler), or give us a call. Cosmetic and aesthetic appointments need no referral. For medical dermatology, we are accepting new patients by referral from your primary care physician; send the referral across and then use the same form.
Cosmetic consultations are $125, paid at booking and credited toward the cost of treatment.
Sources and medical review
1. Weinstein GD, Nigra TP, Pochi PE, Savin RC, Allan A, Benik K, Jeffes E, Lufrano L, Thorne EG. Multicenter study of a prescription vitamin A cream applied to sun-damaged skin. *Archives of Dermatology.* 1991;127(5):659-665. Supports the tile: about 8 in 10 people using a prescription vitamin A cream saw their sun-damaged skin improve, against about 5 in 10 using the same cream without the active ingredient. The product studied was a prescription cream, not a ZO product. PMID 2024983. https://pubmed.ncbi.nlm.nih.gov/2024983/ · Peer-Reviewed Study
2. U.S. Food and Drug Administration. “FDA Authority Over Cosmetics: How Cosmetics Are Not FDA-Approved, but Are FDA-Regulated.” Supports the first FAQ: cosmetics do not need FDA approval before sale, apart from the colors used in them. https://www.fda.gov/cosmetics/cosmetics-laws-regulations/fda-authority-over-cosmetics-how-cosmetics-are-not-fda-approved-are-fda-regulated · Regulatory
3. American Academy of Dermatology Association. “How to select a sunscreen.” Supports the daily sunscreen guidance: broad spectrum, SPF 30 or higher, water resistant. https://www.aad.org/public/everyday-care/sun-protection/shade-clothing-sunscreen/how-to-select-sunscreen · Medical Organization
Content on this page is for educational purposes and is not a substitute for professional medical advice. ZO® Skin Health is a registered trademark of ZO Skin Health, Inc. Cosmetics are regulated by the FDA but are not approved by it before sale, apart from color additives. Products containing retinol and exfoliating acids commonly cause dryness, flaking, redness and stinging, particularly in the first weeks of use, and they increase the skin’s sensitivity to sunlight. Retinol is not used during pregnancy or breastfeeding. Stop and contact us if you develop severe irritation, swelling, blistering or a rash. Individual results may vary. Cosmetic consultations are $125, paid at booking and credited toward the cost of treatment.