In the age of social media and self-optimisation, the conversation around health and wellness can feel exhausting. Next-gen biohacking, new longevity protocols and high-tech supplements fighting for consumer attention can turn the prospect of wellbeing into a performative task rather than a stress-relieving ritual. It’s even more refreshing then, when the celebrities whose wellness routines we’ve long admired happen to adopt a more simplistic, and measured approach.
For Sienna Miller, her sense of wellbeing isn’t found in buzzy trends or cutting-edge treatments, rather it’s grounded in a set of considered rituals, and a beauty philosophy that favours moments of calm over performance and perfection. “I’ve actually never been to a health farm or a wellness retreat in my life,” she reveals. “I’d love to go eventually, but for now, the bath is my sanctuary,” she tells Bazaar UK.
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With very little time for herself (Miller has just had a baby and is gearing up for two new film releases in 2026), the actress has a bath filled with the Aman Magnesium Salts to help her unwind and recalibrate after the day. Her fitness routine follows a similar trajectory; it’s structured where possible but without intense goals and excessive training. In London, she works out with trainer Matt Bevan at his Notting Hill studio, Matter. “He’s amazing,” she says. “However, I’ve been filming so much lately I’ve barely been.”
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Elsewhere, Miller revealed that she takes an uncomplicated and sensory approach to skincare, relying on both pharmacy staples (she has long sworn by the A313 retinol; the insider product coined ‘the French-girl secret to great skin’ by Alexa Chung) and a series of high-tech skincare actives, including the much-loved Skin Ceuticals C E Ferulic Acid. She also makes no secret of her affinity for the celebrity-loved Lyma laser; the targeted device that helps with pigmentation and regenerates skin at a cellular level to boost collagen production.
Charlotte Tilbury
As for how she creates her enviable glow, Miller calls upon a selection of radiance-enhancing skincare and make-up. Her skin prep starts with hydration. “I start with Glow Recipe’s Watermelon Glow Drops (a tip from my daughter) or Rhode’s Glazing Milk,” she shares. Both come with virality for a reason: they help impart a dewy, light-diffusing base which sit perfectly under make-up without pilling or veering too shiny.
Similarly, her approach to foundation is minimalistic. She uses the Charlotte Tilbury Unreal Skin Foundation Stick – and her fingers – to blend the formula onto her skin. “I use it everywhere and just mush it in,” she explains. Miller, who is officially the new face of Charlotte Tilbury, also revealed her love for the brand’s Pillow Talk Blush Balm Lip Tint: “this product just really aligns with who I am.”
The finishing touches of her no make-up make-up routine? “I’ll add some freckles, a lip balm, and a Chanel brow pencil,” she says. It’s the sort of beauty philosophy that’s simple inside and out and takes a 360 approach to skin health.
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