Retrô Cosméticos Mona & Lisa Progressive Smoothing Treatment – Straightens, Reduces Frizz & Adds Shine – 10.1 fl oz (300 ml)
- Helps straighten and align the hair fibre through a heat-activated acid blend.
- Helps reduce volume and the appearance of frizz.
- Leaves lengths looking glossy and feeling soft rather than stripped.
- Builds a progressive, semi-permanent result that grows out naturally.
People with wavy to very curly hair who want a sleeker, more disciplined finish, and stylists looking for a home-care-sized progressive smoothing cream. Because it is a chemical service, heavily bleached or previously processed hair should always be strand-tested first.
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- Made in Brazil by Retrô Cosméticos, part of Grupo Felps, and regularized with ANVISA.
- Built on a blend of natural acids plus biotin, activated with a dryer and flat iron.
- 10.1 fl oz (300 ml) brush-on cream for a 45-minute application.
- The brand carries PETA's Global Animal Test Policy approval.
Run an irritability test and a strand test first. Split the hair into four sections, put on gloves and brush the product on 1 cm from the roots through the lengths and ends. Leave on for 45 minutes, then rinse with water only until nothing remains. Dry the hair fully and flat-iron thin sections 10 to 15 times each, keeping the iron moving. Work in a well-ventilated room.
- 10.1 fl oz (300 ml) flip-cap bottle with a rich, brushable cream texture; the label is printed in Portuguese and English.
- Semi-permanent and progressive: the effect deepens over repeated applications and fades gradually instead of leaving a regrowth line.
The acid blend is the part that reshapes, but it only does its job once the flat iron supplies heat — which is why drying and ironing are steps in the method, not a finishing touch. The fatty alcohols, behentrimonium methosulfate and paraffinum liquidum hold the cream on the strand for the full 45 minutes so the acids act evenly from root area to ends, while dimethicone and cyclopentasiloxane coat the surface afterwards. That silicone layer is what turns a merely straighter result into a glossy one, and biotin and the conditioning base are what keep the hair feeling soft instead of squeaky.
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Learn moreMeet the Retrô Cosméticos Mona & Lisa Progressive Smoothing Treatment – 10.1 fl oz (300 ml), the brush-on version of the brand's Mona & Lisa smoothing ritual. Its active principle is a blend of natural acids that prepares the fibre to be thermally activated, so hair comes out disciplined, without volume, sleek and carrying the intense shine of a tightly sealed cuticle.
Biotin is the headline active alongside the acid blend, and the base is built on classic salon conditioning agents — cetearyl and cetyl alcohol, behentrimonium methosulfate, dimethicone and paraffinum liquidum — which is what gives the cream its rich, brushable body and the finish its softness. It is a semi-permanent service: the smoothing effect grows over repeated applications and grows out naturally.
Applied in four sections with a brush and left on for 45 minutes, it is a home-care format designed to be handled with the care of a salon service. Wear gloves, work in a ventilated space, and always run an irritability and strand test first.
Key Features:
- Blend of natural acids: the smoothing system is activated by heat, so the flat-iron step is what locks in the aligned, sleek result.
- Biotin: the label's headline active, used here as a conditioning ingredient for the hair fibre.
- Helps reduce volume and frizz: leaves the cuticle looking smoother so lengths sit flatter and behave for longer between washes.
- Intense shine: dimethicone and the conditioning base leave a glossy, light-reflecting surface.
- Semi-permanent, progressive result: the effect builds with repeated applications and grows out naturally, with no harsh line of demarcation.
- Generous 300 ml bottle: enough product for several full-length applications, depending on hair length and density.
- PETA-approved brand: Retrô Cosméticos carries PETA's Global Animal Test Policy approval.
How To Use
Professional Use Recommended.
- Test first: before applying, carry out an irritability test and a strand test, and do not proceed if redness or itching appears.
- Section: separate the hair into four parts and put on gloves.
- Apply: using a brush, apply the product 1 cm away from the roots and spread it evenly through the lengths and ends.
- Leave on: let it act for 45 minutes.
- Rinse: rinse with water only, until the product is completely removed.
- Activate: dry the hair fully, then flat-iron thin sections 10 to 15 times each. Finish as you like.
Expert Tip: keep the effect topped up between services with the Retrô Cosméticos Mona & Lisa Shower Botox Hair Mask (1.76 oz / 50 g sachet) — the same Mona & Lisa acid philosophy in a 20-minute shower format.
Ingredients (Highlights)
- Biotin: the signature active printed on the Mona & Lisa label, used as a conditioning ingredient for the hair fibre.
- Cetearyl & Cetyl Alcohol: fatty alcohols that give the cream its body and make it easy to brush on section by section.
- Behentrimonium Methosulfate: a gentle conditioning agent that adds slip and helps the product spread evenly.
- Dimethicone: a silicone that smooths the surface of the fibre and is largely responsible for the glossy finish.
- Citric Acid: adjusts the pH of the formula, which is what keeps the acid system in its working range.
Full Ingredient List (INCI): Aqua; Cetearyl Alcohol; Cetyl Alcohol; Paraffinum Liquidum; Cetrimonium Chloride; Ceteareth-20; Parfum; Alcohol; Citric Acid; Behentrimonium Methosulfate; Hexyl Cinnamal; Cyclopentasiloxane; Dimethyl Palmitamine; Biotin; Linalool; Dimethicone; Propylene Glycol; alpha-isomethyl Ionone; Benzyl Salicylate; Coumarin; Citronellol; Geraniol; DMDM Hydantoin; Hydroxycitronellal; Isoeugenol; Cinnamal.
Allergen warnings / usage cautions: This is a chemical smoothing product and professional application is recommended. Always carry out an irritability test and a strand test before the full service. Wear gloves throughout the application, work in a well-ventilated room, and keep the flat iron moving in thin sections so heat and vapours are never concentrated in one spot. Keep the product 1 cm away from the roots and do not apply if the scalp is irritated or broken. For external use only; keep out of reach of children. In case of contact with the eyes, rinse with plenty of water; in case of sensitisation or accidental ingestion, stop using it and seek medical advice. Store the bottle in a cool, ventilated place away from light. The formula declares the fragrance allergens Hexyl Cinnamal, Linalool, alpha-isomethyl Ionone, Benzyl Salicylate, Coumarin, Citronellol, Geraniol, Hydroxycitronellal, Isoeugenol and Cinnamal, plus DMDM Hydantoin, a formaldehyde-releasing preservative that is restricted in the European Union.
Welcome to the world of Retrô Cosméticos, a Brazilian haircare brand founded in 2017 and part of Grupo Felps. The brand describes itself as a keeper of stories, pairing the charm of the past with present-day technology, and turns olfactory, sensory and visual memories into beauty rituals. Its lines carry playful, nostalgic names — Mona & Lisa, Blond Angel, Alô É Vera!, Poder dos Cachos, Liso Magia, Mandioca 12-in-1 — and every formula is made in Brazil and regularized with ANVISA. The brand also carries PETA's Global Animal Test Policy approval.
FAQ
How do I apply it correctly?
Split clean hair into four sections, put on gloves and brush the product on 1 cm from the roots down to the ends. Leave it for 45 minutes, rinse with water only until nothing is left, dry the hair completely, then flat-iron thin sections 10 to 15 times each.
Is this an authentic Brazilian product?
Yes. It is made in Brazil for Retrô Cosméticos and sourced directly, so you receive the original Brazilian retail bottle with its Portuguese and English label.
Which hair types is it for?
It is aimed at hair with volume and frizz that you want to see sleeker and glossier, from wavy to very curly textures. Because it is a chemical service, hair that is already heavily processed or bleached should always be strand-tested first.
How long does the result last?
It is a semi-permanent, progressive treatment: the smoothing builds with repeated applications and fades gradually as the hair grows, rather than leaving a hard regrowth line. Longevity varies with hair type, washing frequency and the products you use afterwards.
Do you ship internationally, and can I return it?
Yes — we ship worldwide from our Brazilian sourcing network, and unopened items can be returned under our standard returns policy. Tracking is provided on every order.
Explore more at our Retrô Cosméticos collection.