Allergen and Ingredient Transparency Notice
Last updated: September 2026
REJNA Skin is committed to full ingredient transparency. We believe you have the right to know exactly what is in every product you apply to your skin.
Full Ingredient Lists
The complete INCI (International Nomenclature of Cosmetic Ingredients) ingredient list for every REJNA product is displayed on the relevant product page on our website and on the product label. Ingredients are listed in descending order of weight at the time of manufacture, as required by UK Cosmetics Regulation.
Fragrance
All REJNA products are formulated without added synthetic fragrance or essential oil fragrance. Where any product contains a botanical ingredient that naturally carries a mild aroma as a functional property (not as a fragrance), this is declared in the full ingredient list. No REJNA product contains “Parfum” or added fragrance as a separate ingredient.
Known Allergens
The following EU/UK-regulated cosmetic allergens may be present in REJNA products where indicated in the individual ingredient lists:
The PhytoRetin Renewal Oil (Bakuchiol) contains the following declared allergens as naturally occurring components of the botanical oils used in its formulation: Linalool, Limonene, Citronellol, Geraniol, Benzyl Benzoate, Benzyl Salicylate, Citral. These are declared on the product label in accordance with UK Cosmetics Regulation requirements for allergen disclosure.
All other REJNA products are formulated to minimise known contact allergens, particularly fragrance allergens. Full ingredient lists for each product are available on the relevant product page.
Retinoids
The NightLogic Retinol Oil Serum contains Retinyl Palmitate, a mild ester form of Vitamin A (retinoid). Retinoids can increase skin sensitivity to sunlight. This product should be used at night only. Daily SPF is required when using this product. This product is not recommended for use during pregnancy. Please consult a healthcare professional if you are pregnant, breastfeeding, or have a skin condition before using any retinoid-containing product.
Retinyl Palmitate is also present in the BioTech StemCell Moisturiser and the Matrixyl® 3000 Peptide Eye Cream. While present at low concentrations in these products, we recommend daily SPF use as part of any skincare routine.
Patch Testing
We strongly recommend performing a patch test before using any new skincare product for the first time. To patch test: apply a small amount of product to the inside of your wrist or elbow and leave for 24 hours. If you experience redness, itching, swelling, or irritation, discontinue use immediately. If symptoms are severe or persist, consult a healthcare professional.
Pregnancy and Breastfeeding
The majority of REJNA products are formulated to be suitable during pregnancy and breastfeeding. We exclude prescription-strength retinoids, aggressive exfoliants, and endocrine-disrupting compounds from our formulations. However, we always recommend consulting your midwife, GP, or healthcare provider before introducing any new skincare product during pregnancy or while breastfeeding. We are happy to provide full ingredient lists to support this review, please contact us at contact@rejnaskin.com.
The NightLogic Retinol Oil Serum contains a retinoid (Retinyl Palmitate) and is not recommended during pregnancy.
Children
REJNA products are formulated for adult use. Keep all products out of reach of children.
Ingredient Queries
If you have a specific allergy or sensitivity and are unsure whether any REJNA product is suitable for you, please contact us at contact@rejnaskin.com before purchasing. We are happy to provide detailed ingredient information and guidance to help you make an informed decision.