{"product_id":"felps-inner-regener-acidifier","title":"Felps Professional Inner Regener Acidifier – pH Sealing, Frizz Control \u0026 Post-Chemical Shine – 4.06 fl oz (120 ml)","description":"\u003cp\u003eEvery chemical service leaves the hair fibre swollen and alkaline. \u003cstrong\u003eFelps Professional Inner Regener Acidifier – 4.06 fl oz (120 ml)\u003c\/strong\u003e is the salon step that closes the process properly, bringing the hair back to the acidity it prefers.\u003c\/p\u003e\n\u003cp\u003eFormulated at a pH of 2.2 to 2.8 around \u003cstrong\u003ePhytoqueratina\u003c\/strong\u003e (hydrolyzed keratin and wheat protein) and \u003cstrong\u003eNutrimel\u003c\/strong\u003e, a honey drawn from the Andean Yacon potato, it helps seal a raised cuticle and rebalance the fibre from the inside out — exactly what over-processed hair asks for after colouring or bleaching.\u003c\/p\u003e\n\u003cp\u003eThe result is lengths that feel disciplined rather than rubbery: frizz drops away, combing gets easier, and the hydration and nutrition of whatever you apply next stay put for longer. Brazilian stylists use it as the bridge between the shampoo bowl and the mask.\u003c\/p\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003epH 2.2 to 2.8\u003c\/strong\u003e: a genuinely acidic formula that helps close the cuticle after chemical services.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePost-Chemical Step\u003c\/strong\u003e: built for use after colouring, bleaching, relaxing or smoothing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhytoqueratina\u003c\/strong\u003e: hydrolyzed keratin and wheat protein help fragile strands feel stronger and less porous.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNutrimel Yacon Honey\u003c\/strong\u003e: a Brazilian botanical humectant that helps attract and hold moisture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelps Reduce the Appearance of Frizz\u003c\/strong\u003e: a smoother, more aligned surface with fewer visible flyaways.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter Combability\u003c\/strong\u003e: behentrimonium and cetrimonium conditioners add slip to fragile, over-elastic hair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMakes the Next Step Work Harder\u003c\/strong\u003e: helps your mask or conditioner deposit more evenly along the lengths.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow To Use\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eProfessional Use Recommended.\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eCleanse\u003c\/strong\u003e: wash the hair with your usual Felps Professional shampoo and squeeze out the excess water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply\u003c\/strong\u003e: with gloved hands, work the acidifier through the lengths and ends, keeping it off the scalp.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeave On\u003c\/strong\u003e: let it act for 3 to 5 minutes. Do not extend the time — this is a low-pH formula.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRinse\u003c\/strong\u003e: rinse thoroughly with cool or lukewarm water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFollow Up\u003c\/strong\u003e: finish with a Felps Professional treatment mask, then style as usual.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eExpert Tip\u003c\/strong\u003e: pair it with the \u003cstrong\u003eFelps Professional S.O.S. Reconstruction Treatment Mask\u003c\/strong\u003e — the low pH helps the mask settle more evenly, so reconstruction and sealing reinforce each other.\u003c\/p\u003e\n\u003ch3\u003eIngredients (Highlights)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLactic Acid\u003c\/strong\u003e: the acidifying agent that brings the hair back to a low, cuticle-friendly pH.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydrolyzed Keratin\u003c\/strong\u003e: a protein fragment that deposits along the strand and helps weakened hair feel more resilient.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolymnia Sonchifolia Root Juice (Yacon Honey \/ Nutrimel)\u003c\/strong\u003e: a Brazilian botanical humectant that helps hold moisture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eButyrospermum Parkii (Shea) Butter \u0026amp; Cocos Nucifera (Coconut) Oil\u003c\/strong\u003e: rich lipids that help soften rough-feeling ends.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydrolyzed Wheat Protein \u0026amp; Carbocysteine\u003c\/strong\u003e: work along the fibre to help improve softness and the appearance of body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmino Acid Blend\u003c\/strong\u003e: arginine, glycine, serine, proline and more, mirroring the building blocks of hair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTocopheryl Acetate (Vitamin E)\u003c\/strong\u003e: a conditioning ingredient widely used in hair care formulas.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFull Ingredient List (INCI):\u003c\/strong\u003e Aqua; Cetearyl Alcohol; Lactic Acid; Glycerin; Stearamidopropyl Dimethylamine; Behentrimonium Chloride; Cetyl Alcohol; Cetrimonium Chloride; Cyclopentasiloxane; Bis-Cetearyl Amodimethicone; Butyrospermum Parkii Butter; Cocos Nucifera Oil; Isopropyl Palmitate; Hydroxypropyl Starch Phosphate; Parfum; Hydrolyzed Keratin; Dimethicone; Isopropyl Alcohol; Amodimethicone; Guar Hydroxypropyltrimonium Chloride; Alcohol; Dimethyl Palmitamine; Polyquaternium-7; Disodium EDTA; Hydrolyzed Wheat Protein; Laurdimonium Hydroxypropyl Hydrolyzed Keratin; Sodium PCA; Sodium Lactate; Hydrolyzed Soy Protein; Tocopheryl Acetate; Arginine; Methicone; Trideceth-12; Polymnia Sonchifolia Root Juice; Hydrolyzed Corn Protein; Hexyl Cinnamal; Aspartic Acid; PCA; Phenoxyethanol; Benzyl Salicylate; D-Limonene; Carbocysteine; Polyquaternium-10; alpha-Isomethyl Ionone; Citronellol; Sodium Benzoate; Glycine; Alanine; Benzyl Alcohol; Serine; Potassium Sorbate; Valine; Isoleucine; Proline; Threonine; Magnesium Nitrate; Benzyl Benzoate; Methylchloroisothiazolinone and Methylisothiazolinone; Magnesium Chloride; Histidine; Isoeugenol; Phenylalanine; Citric Acid; Dehydroacetic Acid; Xanthan Gum; Citral; Linalool.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAllergen warnings \/ usage cautions: This is a low-pH professional formula — wear gloves, keep it off the scalp and rinse thoroughly. It is fragranced and declares the fragrance allergens Hexyl Cinnamal, Benzyl Salicylate, D-Limonene, alpha-Isomethyl Ionone, Citronellol, Benzyl Benzoate, Isoeugenol, Citral and Linalool, and it is preserved with Methylchloroisothiazolinone and Methylisothiazolinone. It contains hydrolyzed wheat, soy and corn proteins — avoid if you are sensitive to any of these. For external use only. Avoid contact with the eyes and rinse immediately with plenty of water if contact occurs. Do not apply to an irritated or broken scalp. Keep out of the reach of children.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWelcome to the world of \u003cstrong\u003eFelps Professional\u003c\/strong\u003e, where Brazilian salon expertise is bottled for hair that has been through chemistry. Headquartered in Cascavel, Paraná, Felps Professional is a Brazilian professional hair cosmetics brand known for its smoothing and volume-reduction treatments and for home-care lines sold through salons across Brazil and exported to stylists worldwide. Inner Regener is the brand's regeneration protocol, and this acidifier is the step that locks the work in.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhen exactly do I use it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAfter shampooing and before your mask or conditioner. Apply it to the lengths and ends with gloves, leave it on for 3 to 5 minutes, rinse, then continue with your treatment step.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this an authentic Felps Professional product?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. It is genuine Felps Professional, sourced in Brazil where the brand is manufactured. The packaging and label text may be printed in Portuguese.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo you ship internationally, and what if I change my mind?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe ship worldwide with tracking. Delivery times vary by destination, and our standard return and exchange policy applies to unopened items — see our store policy pages for full details.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich hair types is it suitable for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is aimed at chemically processed hair — coloured, bleached, relaxed or smoothed — in any texture. Virgin hair rarely needs it, and because the pH is very low it is best kept off the scalp and used as directed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I still need a mask if I use the acidifier?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, they do different jobs. The acidifier works on the pH and the cuticle; the mask works on nourishment and mass. Used in sequence they complement each other.\u003c\/p\u003e\n\u003cp\u003eExplore more at \u003ca href=\"https:\/\/mkpbr.com\/collections\/felps-professional\"\u003eour Felps Professional collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eSeal the cuticle, settle the pH — the Brazilian finish for chemically processed hair.\u003c\/h3\u003e\n\u003cdiv style=\"margin-top: 18px; background: #F6F7FB; border: 1px solid #E7E9F3; border-radius: 14px; padding: 12px; color: rgba(20,32,62,.74); font-size: 12.5px; line-height: 1.6; max-width: 100%; box-sizing: border-box; overflow: hidden;\"\u003e\n\u003cstrong style=\"color: #14203e;\"\u003eDisclaimer:\u003c\/strong\u003e For external use only. Patch test before use and discontinue use if irritation occurs. Individual results may vary. Product packaging may be labeled in Portuguese. Our Brazilian-brand products are sourced in Brazil and are regularized with ANVISA (Agência Nacional de Vigilância Sanitária), Brazil's national health authority, under the applicable regulatory framework for each product category. ANVISA regularization applies to the Brazilian market and is not equivalent to U.S. FDA approval. See our full \u003ca href=\"\/en-be\/pages\/disclaimers\" style=\"color: rgba(20,32,62,.74); text-decoration: underline;\"\u003eDisclaimers \u0026amp; Important Information\u003c\/a\u003e.\u003c\/div\u003e","brand":"Felps Professional","offers":[{"title":"Default Title","offer_id":53948398600508,"sku":"MKPBR2024-3908","price":46.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0090\/2840\/3278\/files\/felps-inner-regener-acidifier-120ml-front-of-bottle-buy-now-at-mkpbr-com-worldwide-shipping.jpg?v=1785421302","url":"https:\/\/mkpbr.com\/en-be\/products\/felps-inner-regener-acidifier","provider":"MKPBR - Shine Like a Brazilian","version":"1.0","type":"link"}