What is retinal?
Retinal, also called retinaldehyde, belongs to the retinoid family of vitamin A derivatives used on skin. Retinal and retinol are both used in cosmetics; prescription retinoids include tretinoin, adapalene and tazarotene. These names describe different ingredients, not interchangeable versions of one treatment.3
Retinoid skincare can be useful for mild acne, mild uneven pigmentation and mild fine lines. Retinol is also used to improve uneven texture. Those are reasons to consider the ingredient family, rather than promises about what this particular Minimalist serum will do.1
Is 0.1% the right starting strength?
If you are new to retinoids, choose the least intense formula available rather than starting with the strongest option. Do not treat the percentage alone as a reason to choose this serum. A cautious introduction matters because retinoids can irritate skin when introduced too quickly.1
How do you fit it into your routine?
The usual order is cleanser, treatment, then moisturizer, which gives the serum a place without requiring a bathroom seating chart.4
- 1Try a small amount on a small area first. General retinol guidance suggests waiting a couple of days and checking for marked redness or itching before wider use.
- 2At bedtime, wash with a gentle cleanser and pat dry. Avoid scrubbing.
- 3Apply the treatment following your bottle's instructions. Keep it away from your eyes and lips, where topical retinoids can be irritating.
- 4Finish with moisturizer. General retinol guidance favors a noncomedogenic moisturizer, meaning one formulated not to clog pores.
- 5Use sun protection during the day. Apply sunscreen to exposed skin and use shade and protective clothing.
General retinoid guidance starts with every other night and builds up slowly. General retinol guidance also allows starting once every few days. Neither approach means you need to reach nightly use immediately: introduce the treatment gradually rather than making daily use your first goal.12
What should you use alongside it?
Prioritize moisturizer and sunscreen rather than adding several other antiaging treatments. Using too many products, especially multiple antiaging products, can irritate skin and make signs of aging more noticeable. If you already use a prescription skin treatment, ask your prescriber how a cosmetic retinoid would fit into that treatment plan.45
Retinol comes in creams, gels, lotions, ointments and serums, so 'serum' is a format, not a promotion.5
How long should you expect to wait?
Think in weeks to months, not next morning results. With retinol, visible improvement takes several weeks, while changes in dark spots and wrinkles take months. Prescription topical retinoids used for acne can take 12 weeks or longer. These are useful expectations for retinoid care, not a timetable for Minimalist retinal 0.1%.35
Who should be careful?
- Very dry or allergy prone skin: retinoids are not a good starting choice without advice about alternatives.
- Persistent redness or inflammation: ask a dermatologist about an appropriate treatment rather than adding a retinoid.
- Eczema: topical retinoids can worsen eczema through their drying effect.
- Darker skin tones: irritation can trigger hyperpigmentation, meaning dark marks. Start slowly and use moisturizer.
- Moderate or severe acne scarring, or acne linked to menstrual periods or other hormonal changes: see a dermatologist before trying a retinoid.
What should make you stop?
Retinoids can cause dryness, redness, peeling and irritant dermatitis, meaning inflamed skin caused by irritation. Allergic contact dermatitis is also possible, though rare. Pause the product if you develop marked irritation or an itchy rash, and seek medical advice if the reaction persists. Do not treat significant inflammation as something you must push through.13
Can you use it during pregnancy?
Do not use retinoids during pregnancy. If you become pregnant while using a retinoid, stop using it and tell your healthcare provider. If you are planning pregnancy and already use prescribed skin medication, discuss the treatment with your doctor before conception.16
Where this answer comes from
- 1Retinoid or retinol?aad.org
- 2Retinol: Cream, Serum, What It Is, Benefits, How To Usemy.clevelandclinic.org
- 3Topical retinoids (vitamin a creams)dermnetnz.org
- 4Should I apply my skin care products in a certain order?aad.org
- 5Retinol: Cream, Serum, What It Is, Benefits, How To Usemy.clevelandclinic.org
- 6Retinoid gels and creams (‘topical retinoids’)medicinesinpregnancy.org