Louise Thomas
Founder - Louise Thomas Skincare
'As a skin health expert with over 30 years of experience, I’m incredibly particular about what I recommend, especially when it comes to ingestible products. HotTea Mama’s Radiant Roast decaf collagen coffee is one of the few that genuinely impressed me'
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Radiant Roast is HotTea Mama's decaf collagen coffee - a specially designed functional blend that gives you all the pleasure of your morning cup without the caffeine.
Perfect for pregnant women, breastfeeding mothers, and anyone who wants to reduce their caffeine intake without giving up the ritual they love.
It’s your morning coffee, but better.
- Brazilian Decaf Coffee – Full-bodied, rich flavour, naturally decaffeinated with a natural sugar cane process.
- Hydrolysed Bovine Collagen to support skin elasticity, joint health, and postpartum recovery.
- Vitamin C – Enhances collagen absorption while strengthening immunity.
- Vitamin D – Supports hormone balance, bone strength, and immune health.
A coffee that cares – more than a morning boost, it’s a daily ritual designed to support you from the inside out.
Radiant Roast is formulated on the basis of established nutritional science. The following sources underpin the product's key benefit claims:
1.Proksch E, et al."Oral Supplementation of Specific Collagen Peptides Has Beneficial Effects on Human Skin Physiology: A Double-Blind, Placebo-Controlled Study." Skin Pharmacology and Physiology. 2014;27(1):47–55.DOI: 10.1159/000351376Supports the skin elasticity and hydration benefits of hydrolysed collagen supplementation.
2.Shaw G, et al."Vitamin C–enriched gelatin supplementation before intermittent activity augments collagen synthesis." American Journal of Clinical Nutrition. 2017;105(1):136–143.DOI: 10.3945/ajcn.116.138594 Supports Vitamin C co-administration with collagen for enhanced collagen synthesis and absorption.
3.Pu et al."Effects of Oral Collagen for Skin Anti-Aging: A Systematic Review and Meta-Analysis."Nutrients. 2023;15(9):2080.DOI: 10.3390/nu15092080 Meta-analysis of 26 RCTs (1,721 patients) confirming hydrolysed collagen significantly improves skin hydration and elasticity vs. placebo.
4.Reilly et al."A Clinical Trial Shows Improvement in Skin Collagen, Hydration, Elasticity, Wrinkles, Scalp, and Hair Condition following 12-Week Oral Intake of a Supplement Containing Hydrolysed Collagen."Dermatology Research and Practice. 2024.DOI: 10.1155/2024/8752787Double-blind RCT using confocal microscopy and high-resolution ultrasound confirming measurable increases in dermal collagen following supplementation.
5.Demir-Dora D, et al."The Efficacy and Safety of CollaSel Pro® Hydrolyzed Collagen Peptide Supplementation in Improving Skin Health in Adult Females: A Double-Blind, Randomized, Placebo-Controlled Clinical Study." Journal of Clinical Medicine. 2024;13(18):5370.DOI: 10.3390/jcm13185370Supports the bioavailability of hydrolysed collagen peptides and their accumulation in skin and connective tissue after supplementation.
6.Ulrich-Merzenich G, et al."Pregnancy-Induced Dynamical and Structural Changes of Reproductive Tract Collagen." PMC, National Institutes of Health. 2016.Confirms significant remodelling of collagen in the pelvic floor and reproductive tract during pregnancy and postpartum, supporting the relevance of collagen nutritional support at this life stage.
7.INVIGOR8."The Role of Collagen in Postpartum Recovery: Repair From Within."invigor8.com. 2024.Covers pelvic floor and soft tissue repair supported by collagen supplementation postpartum, including recovery from caesarean section and the role of glycine and proline amino acids in tissue rebuilding.
8.EFSA NDA Panel."Scientific Opinion on health claims related to Vitamin C and collagen formation (ID 130, 131, 136, 137, 149) pursuant to Article 13(1) of Regulation (EC) No 1924/2006."EFSA Journal. 2009;7(9):1226.DOI: 10.2903/j.efsa.2009.1226Regulatory-approved health claim confirming that Vitamin C contributes to normal collagen formation for the normal function of skin, bones, cartilage, gums, teeth, and blood vessels.
9.NICE."Maternal and child nutrition: recommendations on Vitamin D supplementation in pregnancy and breastfeeding." NICE Guideline NG247. Updated 2025.UK clinical guideline recommending all pregnant and breastfeeding women take 10 micrograms (400 IU) of Vitamin D daily, supporting the Vitamin D content in Radiant Roast as specifically relevant to its target audience.
10.NHS."Foods to avoid in pregnancy — caffeine guidelines." National Health Service UK. 2024.Confirms the NHS recommended limit of 200mg caffeine per day during pregnancy, establishing the safety benchmark that Radiant Roast's <10mg per serving falls well within.
11.EFSA Panel on Dietetic Products, Nutrition and Allergies."Scientific Opinion on the safety of caffeine."EFSA Journal. 2015;13(5):4102.DOI: 10.2903/j.efsa.2015.4102Supports the established safe caffeine limit during pregnancy and confirms decaffeinated coffee as a low-caffeine alternative consistent with pregnancy safety guidelines.
12.Danessa G, Notario D, Regina R."Effects of collagen-based supplements on skin's hydration and elasticity during ageing: A systematic review and meta-analysis."Indian Journal of Dermatology, Venereology and Leprology. 2025;91:730–740.DOI: 10.25259/IJDVL_1165_2023 2025 systematic review confirming collagen supplements consistently improve skin hydration and elasticity, with hydrolysed collagen acting via two pathways: stimulating fibroblasts and providing bioactive peptide building blocks for new collagen synthesis.
A note on these references: The studies cited relate to the key active ingredients in Radiant Roast and the ingredient categories they represent. Individual results may vary. Radiant Roast is a food supplement, not a medicine, and these references are not intended to constitute medical claims. Always consult your midwife, GP, or healthcare provider if you have questions about supplementation during pregnancy or breastfeeding.
Radiant Roast
Brazilian Decaffeinated Coffee (90%) – Smooth and full‑bodied Brazilian coffee, naturally decaffeinated using sugar cane decaf process, for all the flavour and ritual of coffee, without the jitters, crashes, or sleepless nights.
Hydrolysed Bovine Collagen (9%) – Pregnancy‑safe, grass-fed bovine collagen to help support skin elasticity, joint comfort, pelvic floor, and postpartum tissue repair.
Vitamin C (Ascorbic Acid 0.5%) – Essential for collagen absorption and immune function, whilst protecting cells against everyday oxidative stress.
Vitamin D (Cholecalciferol 0.5%) – Contributes to hormone balance, bone strength, and immunity – especially important during pregnancy, breastfeeding, and beyond.
INGREDIENTS
Decaffeinated Ground Brazilian Coffee (90%) Hydrolysed Bovine Collagen (9%), Vitamin C (Ascorbic Acid 0.5%), Vitamin D (Cholecalciferol 0.5%),
NUTRITIONAL INFO
Energy (per 100g/10g) 38Kcal/4Kcal
Fat 0g/0g
of which Saturates 0g/0g
Carbohydrate 0g/0g
of which Sugars 0g/0g
Fibre 0g/0g
Protein 9.1g/0.91g
Salt 0.18g/0.102g
Vitamin C 138.9mg/13.9mg (173%/17.3% NRV)
Vitamin D 34.7mg/3.47mg (694%/6.94% NRV)
*NRV - Nutrient Value Reference
RADIANT ROAST
Does Radiant Roast taste like real coffee?
Yes - It has a smooth, full-bodied flavour with chocolatey depth and none of the bitterness or synthetic aftertaste common in many decaf brands. The sugar cane decaffeination process is specifically chosen to preserve the coffee's natural flavour profile. Most people say they can't tell the difference.
What is the caffeine content of Radiant Roast?
Under 10mg per 10g serving. Compare this to a standard instant coffee (around 62mg), a filter coffee (around 96mg), or a coffee shop drink (which can exceed the full 200mg pregnancy limit in a single cup). Radiant Roast is an exceptionally low-caffeine option.
Is Radiant Roast safe during pregnancy?
Yes. Radiant Roast contains under 10mg of caffeine per serving - well within the NHS recommended limit of 200mg per day during pregnancy. The collagen is hydrolysed bovine collagen, listed as Generally Recognised as Safe (GRAS), and the vitamins are at normal supplementary levels. Always check with your midwife or GP if you have specific concerns.
What kind of vitamins are added?
Natural vitamin C (from acerola cherry) and high-quality D3 – both at levels safe and supportive during pregnancy and beyond.
Can I drink Radiant Roast while breastfeeding?
Absolutely. With under 10mg caffeine per cup, Radiant Roast is a smart swap for regular coffee during breastfeeding. NHS guidance considers up to 200mg caffeine per day compatible with breastfeeding; Radiant Roast keeps you well under that. The collagen, Vitamin C, and Vitamin D are also beneficial during the postpartum period.
How much collagen is in each serving?
Each 10g serving contains approximately 1.6g of hydrolysed bovine collagen — particularly effective when combined with the Vitamin C in the blend, which the body requires to synthesise and absorb collagen.
Who formulated Radiant Roast?
The collagen and vitamin blend was developed by HotTea Mama in collaboration with Purer Mama, a UK wellness brand founded by an award-winning obstetrician, to ensure the functional ingredients are safe, effective, and specifically suited to women's health across pregnancy, postpartum, and beyond.
Can I drink Radiant Roast during perimenopause or menopause?
Yes - Oestrogen decline during perimenopause accelerates collagen loss and makes Vitamin D deficiency more common. Radiant Roast's collagen and Vitamin D make it a supportive daily ritual at this life stage, and the low caffeine means it won't worsen sleep disruption or hot flushes the way regular coffee can.
